Butter as a source of vitamin A in the diet of the people of the United States /

"In cooperation with the agricultural experiment stations of Alabama, Arizona, California, Idaho, Indiana, Iowa, Kansas, Louisiana, Maryland, Minnesota, Mississippi, Montana, Nebraska, New York (Cornell), North Carolina, Ohio, Oregon, Pennsylvania, Washington, Wisconsin, and Wyoming."

Annotated bibliography of vitamin E,

Mode of access: Internet.

A vitamin digest

Mode of access: Internet.

Physicians' vitamin reference book, presenting to the clinician a useful compendium of the latest facts about vitamins,

Bibliographical foot-notes.