A primer on vitamins / by United States ; Food and Drug Administration. United States. Food and Drug Administration. Vitamins. 641.18 PRI Rockville, Md. : Dept. of Health, Education, and Welfare, Public Health Service, Food and Drug Administration, Office of Public Affairs ; 1978. 1978. Text 40 p. : eng United States.; Department of Health, Education, and Welfare.; DHEW publication