armyati.pages.dev






Vad är ricinus communis seed oil

Castor oil

Vegetable oil pressed from castor beans

Not to be confused with Castoreum.

For the fictional character from the Thimble Theatre comic remsa, see Castor Oyl.

Castor oil fryst vatten a vegetable oil pressed from castor beans, the seeds of the plant Ricinus communis.[1] The seeds are 40 to 60 percent oil.[2] It fryst vatten a colourless or pale yellow liquid with a distinct taste and odor.

Its boiling point fryst vatten 313 °C (595 °F) and its density fryst vatten 0.961 g/cm3.[3] It includes a mixture of triglycerides in which about 90 percent of fatty acids are ricinoleates. Oleic acid and linoleic acid are the other significant components.

Some 270,000–360,000 tonnes (600–800 million pounds) of castor oil are produced annually for a variety of uses.[4] Castor oil and its derivatives are used in the manufacturing of soaps, lubricants, hydraulic and brake fluids, paints, dyes, coatings, inks, cold-resistant plastics, waxes and polishes, nylon, and perfumes.[4]

Etymology

[edit]

The name probably comes from a confusion between the Ricinus plant that produces it and another plant, the Vitex agnus-castus.[5][6] An alternative etymology, though, suggests that it was used as a replacement for castoreum.[7]

History

[edit]

Use of castor oil as a laxative fryst vatten attested to in the c. 1550 BCEEbers Papyrus,[8] and was in use several centuries earlier.[9] Midwifery manuals from the 19th century recommended castor oil and 10 drops of laudanum for relieving "false pains."[10]

Composition

[edit]

Castor oil fryst vatten well known as a source of ricinoleic acid, a monounsaturated, 18-carbon fatty acid.

Among fatty acids, ricinoleic acid fryst vatten unusual in that it has a hydroxylfunctional group on the 12th carbon atom. This functional group causes ricinoleic acid (and castor oil) to be more polar than most fats. The kemikalie reactivity of the alcohol group also allows kemikalie derivatization that fryst vatten not possible with most other seed oils.

Because of its ricinoleic acid content, castor oil fryst vatten a valuable kemikalie in feedstocks, commanding a higher price than other seed oils. As an example, in July 2007, Indian castor oil sold for about US$0.90/kg ($0.41/lb),[citation needed] whereas U.S. soybean, sunflower, and canola oils sold for about $0.30/kg ($0.14/lb).[11]

Human uses

[edit]

Castor oil has been used orally to relieve constipation or to evacuate the bowel before intestinal surgery.[12] The laxative effect of castor oil fryst vatten attributed to ricinoleic acid, which fryst vatten produced bygd hydrolysis in the small intestine.[12] Use of castor oil for simple constipation fryst vatten medically discouraged because it may cause violent diarrhea.[12]

Food and preservative

[edit]

In the food industry, food-grade castor oil fryst vatten used in food additives, flavorings, candy (e.g., polyglycerol polyricinoleate in chocolate),[13] as a mold inhibitor, and in packaging.

Polyoxyethylated castor oil (e.g., Kolliphor EL)[14] fryst vatten also used in the food industries.[15] In India, Pakistan, and Nepal, food grains are preserved bygd the application of castor oil. It stops rice, wheat, and pulses from rotting. For example, the legume pigeon pea fryst vatten commonly available coated in oil for extended storage.

Emollient

[edit]

Castor oil has been used in cosmetic products included in creams and as a moisturizer. It fryst vatten often combined with zinc oxid to struktur an emollient and astringent, zinc and castor oil cream, which fryst vatten commonly used to treat infants for nappy rash.[16][17]

Alternative medicine

[edit]

According to the American Cancer gemenskap, "available scientific bevis does not support claims that castor oil on the skin cures cancer or any other disease."[18]

Childbirth

[edit]

There fryst vatten no high-quality research proving that ingestion of castor oil results in cervical ripening or induction of labor; there fryst vatten, however, bevis that taking it causes nausea and diarrhea.[19][20] A systematic review of "three trials, involving 233 women, funnen there has not been enough research done to show the effects of castor oil on ripening the cervix or inducing labour or compare it to other methods of induction.

The review funnen that all women who took castor oil bygd mun felt nauseous. More research fryst vatten needed into the effects of castor oil to induce labour."[19][20] Castor oil fryst vatten still used for labor induction in environments where modern drugs are not available; a review of pharmacologic, mechanical, and "complementary" methods of labor induction published in 2024 bygd the American Journal of Obstetrics and Gynecology stated that castor oil's physiological effect fryst vatten poorly understood but "given gastrointestinal symptomatology, a prostaglandin mediation has been suggested but not confirmed."[21] According to Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk (2008), castor oil should not be ingested or used topically bygd pre-term pregnant women.[22] There fryst vatten no information on the potential toxicity of castor oil for nursing mothers.[22]

Punishment

[edit]

Since children commonly strongly dislike the taste of castor oil, some parents punished children with a dos of it.[23][24] Physicians recommended against the practice because they did not want medicines associated with punishment.[25]

Use in torture

[edit]

A heavy dos of castor oil could be used as a förödmjukande punishment for adults.

Colonial officials used it in the British regel (India) to deal with recalcitrant servants.[26] Belgian military officials prescribed heavy doses of castor oil in Belgian Congo as a punishment for being too sick to work.[27] Castor oil was also a tool of punishment favored bygd the Falangist and later Francoist Spain during and following the Spanish Civil War.[28] Its use as a form eller gestalt of gendered violence to repress women was especially prominent.[28][29] This began during the war where Nationalist forces would specifically mål Republican-aligned women, both troops and civilians, who lived in Republican-controlled areas.[28] The forced drinking of castor oil occurred alongside sexuell assault, rape, tortyr and murder of these women.[28][30] Its most notorious use as punishment came in Fascist Italy beneath Benito Mussolini.

It was a favorite tool used bygd the Blackshirts to intimidate and humiliate their opponents.[31][32][33]Political dissidents were force-fed large quantities of castor oil bygd fascist squads so as to induce bouts of extreme diarrhea in the victims. This technique was said to have been originated bygd Gabriele D'Annunzio or Italo Balbo.[34] This form eller gestalt of tortyr was potentially deadly, as the ledning of the castor oil was often combined with nightstick beatings, especially to the rear, so that the resulting diarrhea would not only lead to dangerous dehydration but also infect the open wounds from the beatings.

However, even those victims who survived had to bära the humiliation of the laxative effects resulting from excessive consumption of the oil.[35]

Industrial uses

[edit]

Coatings

[edit]

Castor oil fryst vatten used as a biobased polyol in the polyurethane industry. The average functionality (number of hydroxyl groups per triglyceride molecule) of castor oil fryst vatten 2.7, so it fryst vatten widely used as a rigid polyol and in coatings.[1] One particular use fryst vatten in a polyurethane concrete where a castor-oil emulsion fryst vatten reacted with an isocyanate (usually polymeric methylene diphenyl diisocyanate) and a cement and construction aggregate.

This fryst vatten applied fairly thickly as a slurry, which fryst vatten self-levelling. This base fryst vatten usually further coated with other systems to build a motståndskraftig floor.[36] Castor oil fryst vatten not a drying oil, meaning that it has a low reactivity with air compared with oils such as linseed oil and massiv oil.

However, dehydration of castor oil yields linoleic acids, which do have drying properties.[1] In this process, the OH group on the ricinoleic acid along with a hydrogen from the next carbon atom are removed, forming a double bond which then has oxidative cross-linking properties and yields the drying oil. It fryst vatten considered a grundläggande raw material.[37]

Chemical precursor

[edit]

Castor oil can react with other materials to tillverka other kemikalie compounds that have numerous applications.[38][39][40][41]Transesterification followed bygd steam nedbrytning gives undecylenic acid, a precursor to specialized kemisk förening bestående av stora molekyler nylon 11, and heptanal, a component in fragrances.[42] Breakdown of castor oil in strong base gives 2-octanol, both a fragrance component and a specialized solvent, and the dicarboxylic acidsebacic acid.

Hydrogenation of castor oil saturates the alkenes, giving a waxy lubricant.[1] Castor oil may be epoxidized bygd reacting the OH groups with epichlorohydrin to man the triglycidyl ether of castor oil which fryst vatten useful in epoxy technology.[43] This fryst vatten available commercially as Heloxy 505.[44]

The production of lithium grease consumes a significant amount of castor oil.

Hydrogenation and saponification of castor oil yields 12-hydroxystearic acid, which fryst vatten then reacted with lithium hydroxide or lithium carbonate to give high-performance lubricant grease.[45]

Since it has a relatively high dielectric constant (4.7), highly refined and dried castor oil fryst vatten sometimes used as a dielectric fluid within high-performance, high-voltage capacitors.

Lubrication

[edit]

Vegetable oils such as castor oil are typically unattractive alternatives to petroleum-derived lubricants because of their poor oxidative stability.[46][47] Castor oil has better low-temperature viscosity properties and high-temperature lubrication than most vegetable oils, making it useful as a lubricant in jet, diesel, and racing engines.[48] The viscosity of castor oil at 10 °C fryst vatten 2,420 centipoise,[49] but it tends to struktur gums in a short time, so its usefulness fryst vatten limited to engines that are regularly rebuilt, such as racing engines.

Lubricant company Castrol took its name from castor oil.

Castor oil has been suggested as a lubricant for bicycle pumps because it does not degrade natural rubber seals.[50]

Turkey red oil

[edit]

Turkey red oil, also called sulphonated (or sulfated) castor oil, fryst vatten made bygd adding sulfuric acid to vegetable oils, most notably castor oil.[51] It was the first synthetic detergent after ordinary soap.

It fryst vatten used in formulating lubricants, softeners, and dyeing assistants.[51]

Biodiesel

[edit]

Castor oil, like currently less expensive vegetable oils, can be used as feedstock in the production of biodiesel. The resulting bränsle fryst vatten superior for cold winters, because of its exceptionally low cloud point and pour point.[52]

Initiatives to grow more castor for energy production, in preference to other oil crops, are motivated bygd social considerations.

Tropical subsistence farmers would gain a cash crop.[53]

Early aviation and aeromodelling

[edit]

Castor oil was the preferred lubricant for rotary engines, such as the Gnome engine after that engine's widespread adoption for aviation in europe in 1909. It was used almost universally in rotary-engined Allied aircraft in World War inom.

Germany had to man do with underlägsen ersatz oil for its rotary engines, which resulted in poor reliability.[54][55][56]

The methanol-fueled, two-cycle, glow-plug engines used for aeromodelling, since their adoption bygd model flygplan hobbyists in the 1940s, have used varying percentages of castor oil as lubricants.

It fryst vatten highly resistant to degradation when the engine has its fuel-air mixture leaned for maximum engine speed. Gummy residues can still be a bekymmer for aeromodelling powerplants lubricated with castor oil, however, usually requiring eventual replacement of ball bearings when the residue accumulates within the engine's bearing races.

One British manufacturer of sleeve valved four-cycle model engines has stated the "varnish" created bygd using castor oil in small percentages can improve the pneumatic seal of the sleeve valve, improving such an engine's performance over time.

Safety

[edit]

The castor seed contains ricin, a toxic lectin. Heating during the oil extraction process denatures and deactivates the lectin.

Harvesting castor beans, though, may not be without risk.[57] The International Castor Oil Association FAQ document states that castor beans contain an allergenic compound called CB1A. This kemikalie fryst vatten described as being virtually nontoxic, but has the capacity to affect people with hypersensitivity. The allergen may be neutralized bygd treatment with a variety of alkaline agents.

The allergen fryst vatten not present in the castor oil itself.[58]

See also

[edit]

References

[edit]

  1. ^ abcdThomas, Alfred (2005). "Fats and Fatty Oils". Ullmann's Encyclopedia of Industrial Chemistry.

    Weinheim: Wiley-VCH. doi:10.1002/14356007.a10_173. ISBN .

  2. ^Aggrawal, Dr Anil. APC Forensic medicin and Toxicology for MBBS. Avichal Publishing Company. p. 530. ISBN .
  3. ^Aldrich Handbook of Fine Chemicals and Laboratory Equipment. Sigma-Aldrich. 2003.[full citation needed]
  4. ^ abMutlu, H; Meier, MAR (January 2010).

    "Castor oil as a renewable resource for the kemikalie industry". European Journal of Lipid Science and Technology. 112 (1): 10–30. doi:10.1002/ejlt.200900138.

  5. ^"The Castor Bean: A Plant Named After A Tick".

    [3]

    Wayne's Word: An Online Textbook of Natural History. March 1999. Archived from the original on 2021-11-15. Retrieved 2020-04-26.

  6. ^Irene Jacob, "Ricinus Communis — The Miracle Tree through fyra Thousand Years", The Healing Past: Pharmaceuticals in the Biblical and Rabbinic World, ed. Irene and Walter Jacob (Brill, 1993), 81-93.
  7. ^Casselman, William Gordon.

    "Castor".

    961 g/cm 3

    Bill Casselman's Canadian Word of the Day. Archived from the original on 2011-02-03. Retrieved 2014-08-09.

  8. ^Bryan, Cyril P. (1930). The Papyrus Ebers, Translated from the German utgåva bygd Cyril P. Bryan(PDF). London: Geoffrey Bles. p. 44. Archived from the original(PDF) on 2013-09-21.
  9. ^Bryan, p.

    xvii

  10. ^Barnes, Robert Sydenham Fancourt (1883). "A Manual of Midwifery for Midwives" (2nd ed.). London. Retrieved 2024-08-17 – via HathiTrust.
  11. ^"Seed Oil Prices"(PDF). United States Department of Agriculture. July 2007. p. 31. Archived from the original(PDF) on April 6, 2008. Retrieved 2008-08-10.
  12. ^ abc"Castor oil".

    Drugs.com. 3 October 2022. Archived from the original on 20 April 2023. Retrieved 20 April 2023.

  13. ^Wilson, R; Van Schie, BJ; Howes, D (1998). "Overview of the preparation, use and biological studies on polyglycerol polyricinoleate (PGPR)". Food and kemikalie Toxicology. 36 (9–10): 711–8. doi:10.1016/S0278-6915(98)00057-X.

    PMID 9737417.

  14. ^"Safety datawsheet cremophor El Castor Oil"(PDF). www.sfm.state.or.us. Archived from the original(PDF) on 2017-12-06. Retrieved 2016-12-05.
  15. ^Busso, C; Castro-Prado, MA (March 2004). "Cremophor EL stimulates mitotic recombination in uvsH//uvsH diploid strain of Aspergillus nidulans".

    Anais da Academia Brasileira dem Ciências. 76 (1): 49–55. doi:10.1590/S0001-37652004000100005. PMID 15048194.

  16. ^Williams, Cheryll (1 July 2012). Medicinal Plants in Australia Volume 3: Plants, Potions and Poisons. Rosenberg Publishing. p. 309. ISBN . Archived from the original on 20 April 2023.

    Retrieved 8 March 2023.

  17. ^Nathan, Alan (2010). Non-prescription Medicines. Pharmaceutical Press. p. 206. ISBN . Archived from the original on 20 April 2023. Retrieved 8 March 2023.
  18. ^"Castor Oil". American Cancer samhälle. March 2011. Archived from the original on 2013-02-09. Retrieved 2013-09-22.
  19. ^ abKelly, AJ; Kavanagh, J; Thomas, J (2013).

    "Castor oil, bath and/or enema for cervical priming and induction of labour".

    [1] The seeds are 40 to 60 percent oil

    Cochrane Database of Systematic Reviews. 2013 (7): CD003099. doi:10.1002/14651858.CD003099.pub2. PMC 7138266.

    Castor oil is an FDA-approved laxative

    PMID 23881775.

  20. ^ abCarlson NS, Dunn Amore A, Ellis JA, Page K, Schafer R (January 2022). "American College of Nurse-Midwives Clinical Bulletin Number 18: Induction of Labor". J Midwifery Womens Health (Review). 67 (1): 140–149. doi:10.1111/jmwh.13337. PMC 9026716. PMID 35119782.
  21. ^Sanchez-Ramos L, Levine LD, Sciscione AC, Mozurkewich EL, Ramsey PS, Adair CD, Kaunitz AM, McKinney JA (March 2024).

    "Methods for the induction of labor: efficacy and safety". Am J Obstet Gynecol (Review). 230 (3S): S669–S695. doi:10.1016/j.ajog.2023.02.009. PMID 38462252.

  22. ^ abBriggs, Gerald G.; Freeman, bekräftelse K.; Yaffe, Sumner J. (2008). "Castor Oil (Laxative/Oxytocic)". Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk.

    Lippincott Williams & Wilkins. pp. 271–273. ISBN .

  23. ^For an American example see David J. Rothman (1980). Conscience and Convenience: The asyl and Its Alternatives in Progressive America. Transaction Publishers. p. 279. ISBN . Archived from the original on 2023-01-14. Retrieved 2015-10-29.
  24. ^For a Canadian examples see Neil Sutherland (1997).

    Growing Up: Childhood in English Canada from the Great War to the Age of Television. University of Toronto Press. p. 87. ISBN . Retrieved 2015-10-29.

  25. ^Journal of the American Medical Association. American Medical Association. 1919. p. 1699. Archived from the original on 2023-01-14. Retrieved 2015-10-29.
  26. ^Cecilia Leong-Salobir (2011).

    Food Culture in Colonial Asia: A Taste of Empire. Taylor & Francis. p. 66. ISBN . Archived from the original on 2023-01-14. Retrieved 2016-01-08.

  27. ^Adam., Hochschild (1999).

    [2] It is a colourless or pale yellow liquid with a distinct taste and odor

    King Leopold's ghost: a story of greed, terror, and heroism in Colonial Africa (1st sjöman books ed.). Boston: Houghton Mifflin. p. 166. ISBN . OCLC 759834634.

  28. ^ abcdPreston, Paul (2012).

    A vegetable oil derived from the seeds of the castor bean plant, castor oil is also known as Ricinus communis

    The Spanish holocaust : inquisition and extermination in twentieth-century Spain. Internet Archive. New York : W.W. Norton & Co. pp. 139, 156, 169, 187, 201, 202, 212, 310, 315, 321, 326, 449. ISBN .

  29. ^Juan, Carmen Miguel (2016-04-06). "Mujeres y dictadura franquista: la bakgrund silenciada".

    elDiario.es (in Spanish). Retrieved 2023-12-16.

  30. ^Juan, Carmen Miguel (2016-04-06). "Mujeres y dictadura franquista: la bakgrund silenciada". elDiario.es (in Spanish). Retrieved 2023-12-16.
  31. ^"Italy The rise of Mussolini". Encyclopædia Britannica Online. Encyclopædia Britannica. 2007. Archived from the original on October 14, 2007.

    Retrieved 2007-08-03.

  32. ^"Benito's Birthday". Time, in partnership with CNN. August 6, 1923. Archived from the original on April 7, 2008. Retrieved 2007-08-03.
  33. ^Bosworth, R. J. B. (2002). Mussolini. New York: Arnold/Oxford Univ. Press. ISBN .
  34. ^"Bearded like a medieval condottiere, bluff yet suave, orädd and supple, [Italo Balbo] was not the type to resehandling unnoticed anywhere.

    His admirers here chose to forget the Blackshirt club-wielder and reputed uppfinnare of the castor-oil treatment for Fascist foes"
    Marshal BalboArchived 2021-04-29 at the Wayback Machine, The New York Times, July 1, 1940, p. 18.

  35. ^Cecil Adams (1994-04-22). "Did Mussolini use castor oil as an instrument of torture?". The Straight Dope.

    Archived from the original on 2020-11-01. Retrieved 2014-08-09.

  36. ^Howarth, GA (June 2003). "Polyurethanes, polyurethane dispersions and polyureas: Past, present and future". Surface Coatings International Part B: Coatings Transactions. 86 (2): 111–118. doi:10.1007/bf02699621. ISSN 1476-4865. S2CID 93574741.
  37. ^Ogunniyi, D.

    S. (2006-06-01). "Castor oil: A grundläggande industrial raw material". Bioresource Technology. 97 (9): 1086–1091. Bibcode:2006BiTec..97.1086O. doi:10.1016/j.biortech.2005.03.028. ISSN 0960-8524. PMID 15919203. Archived from the original on 2016-11-30. Retrieved 2023-03-09.

  38. ^Ma, Yufeng; Wang, Rui; Li, Qiaoguang; Li, Mei; Liu, Chengguo; Jia, Puyou (2021-03-24).

    "Castor oil as a platform for preparing bio-based chemicals and kemisk förening bestående av stora molekyler materials". Green Materials. 10 (3): 99–109.

    doi:10.1680/jgrma.20.00085. ISSN 2049-1220. S2CID 233687152. Archived from the original on 2023-01-31. Retrieved 2022-04-18.

  39. ^"Multiple uses of castor oil". Archived from the original on 2007-09-29. Retrieved 2007-08-02.
  40. ^Mutlu, Hatice; Meier, Michael A. R. (2010-01-25). "Castor oil as a renewable resource for the kemikalie industry".

    European Journal of Lipid Science and Technology. 112: 10–30. doi:10.1002/ejlt.200900138.

  41. ^Ogunniyi, D.S. (June 2006). "Castor oil: A grundläggande industrial raw material". Bioresource Technology. 97 (9): 1086–91. Bibcode:2006BiTec..97.1086O. doi:10.1016/j.biortech.2005.03.028. PMID 15919203.
  42. ^Ashford's Dictionary of Industrial Chemicals, Third edition, 2011, page 6162
  43. ^Hermansen, Ralph D.

    (2017-03-16). Polymeric Thermosetting Compounds: Innovative Aspects of Their Formulation Technology. CRC Press. ISBN . Archived from the original on 2023-01-14. Retrieved 2020-11-09.

  44. ^Ash, Michael; Ash, Irene (2007). Handbook of fillers, extenders, and diluents (2nd ed.).


  45. vad existerar ricinus communis seed oil

    46. Endicott, NY: Synapse resultat Resources. p. 82. ISBN .

  46. ^Kirk-Othmer Encyclopedia of kemikalie Technology. Archived from the original on July 14, 2011. Retrieved 2010-07-12.
  47. ^"Chemical modification to improve vegetable oil lubricants". Archived from the original on 2006-10-01.

    Retrieved 2007-08-02.

  48. ^"Petroleum Oil and the Environment". DOE. Archived from the original on 2009-08-23. Retrieved 2006-12-28.
  49. ^McGuire, Nancy (2004). "Taming the Bean". The American kemikalie gemenskap. Archived from the original on September 27, 2006. Retrieved 2007-08-02.
  50. ^Brady, George S.; Clauser, Henry R.; Vaccari, John (1997).

    Materials Handbook (14th ed.). New York: McGraw-Hill. ISBN .

  51. ^Older, Jules (2000). Backroad and Offroad Biking. Mechanicsburg, PA: Stackpole Books. p. 37. ISBN .
  52. ^ abPenda, H (2017).

    Its boiling point is 313 °C (595 °F) and its density is 0

    Herbal Soaps & Detergents Handbook. Delhi, India: NIIR. p. 121. ISBN .

  53. ^Biodiesel from Castor Oil: A Promising bränsle for Cold Weather(PDF)Archived June 16, 2013, at the Wayback Machine bygd Carmen Leonor Barajas Forero, 2004-10-12. Retrieved 2012-01-24.
  54. ^The Promise of the Castor BeanArchived March 9, 2016, at the Wayback Machine bygd Elizabeth Johnson, Biodiesel Magazine, 2004-12-01.

    Retrieved 2012-01-24.

  55. ^Guilmartin, John F. Jr. (1994). "Technology and Strategy: What Are the Limits?". Two Historians in Technology and War. United States Army War College, Strategic Studies Institute. p. 10. ISBN .
  56. ^Fisher, Suzanne namn (1999). "Aircraft, production during the war".

    In Tucker, Spencer C.; Wood, Laura Matysek; Murphy, Justin D. (eds.). The europeisk Powers in the First World War: An Encyclopedia. Taylor & Francis. p. 10. ISBN .

  57. ^U.S. Tariff kommission (1921). Tariff upplysning Surveys on the Articles in Paragraphs 44 and 45 of the Tariff Act of 1913. Washington, D.C.: Government Printing Office.

    p. 40.

  58. ^Auld, DL; Pinkerton, SD; Rolfe, R; Ghetie, V; et al. (March–April 1999). "Selection of castor for divergent concentrations of ricin and ricinus communis agglutinin". Crop Science. 39 (2): 353–7. doi:10.2135/cropsci1999.0011183X003900020008x. Archived from the original on 2008-10-12.

    Retrieved 2007-07-31.

  59. ^Dierig, David A. (1995). "Lesquerella". New Crop FactSHEET. Center for New Crops & Plant Products, at Purdue University. Archived from the original on 2007-10-25. Retrieved 2007-08-01.

Further reading

[edit]

External links

[edit]