Vitamin D

Vitamin D- Calciferol
Description of the sunshine vitamin with recommended dosage, deficiency signs, and list of food sources.
http://www.anyvitamins.com/vitamin-d-info.htm

Vitamin D- Facts and Information
Facts on the vitamin such as RDA intake, functions, absorption, and deficiency signs including rickets.
http://www.go-symmetry.com/vitamin-d.htm

Vitamin D, Linus Pauling Institute
Discussion of function, deficiency, disease prevention, disease treatment, food sources, supplements, research, and recommendations from the Linus Pauling Institute.
http://lpi.oregonstate.edu/infocenter/vitamins/vitaminD/

Vitamin D- Overview
Explains functions of the vitamin with RDA intake suggestions, symptoms of deficiency, and foods high in calciferol.
http://www.nlm.nih.gov/medlineplus/ency/article/002405.htm