- Vitamin B12 in the Vegan Diet
Describes the body's requirement for B12 and sources.
www.vrg.org/nutrition/b12.htm
- Linux Pauling Institute: Vitamin B12
Largest and most complex of all vitamins. Includes causes and symptoms of deficiency, its use in treating diseases, food sources, and drug interactions.
lpi.oregonstate.edu/infocenter/vitamins/vitaminB12
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