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Environmental Working Group, December 17, 2006, "Farm Subsidy Database," http://www.ewg.org/farm/index.php?key=nosign (April 2, 2007)

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William J. Weida, March 5, 2004, "Considering the Rationales for Factory Farming," Grace Factory Farm Project, http://www.factoryfarm.org/docs/Foundations_of_Sand.pdf (April 2, 2007)

Sustainable Table, "The Issues: Factory Farming," GRACE, http://www.sustainabletable.org/issues/factoryfarming/ (April 2, 2007)

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American Dietetic Association, June 2003,"Vegetarian Diets," http://eatright.org/cps/rde/xchg/ada/hs.xsl/advocacy_933_ENU_HTML.htm (April 2, 2007)

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Physicians Committee for Responsible Medicine, "Preventive Medicine and Nutrition," http://www.pcrm.org/health/prevmed/ (April 2, 2007)

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John Robbins, "Healthy at 100: The Scientifically Proven Secrets of the World's Healthiest and Longest Lived Peoples (New York: Random House, 2006).

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