Columbia subject headings:
Drugs--Standards--Congresses.
Food additives--Standards--Congresses.
United States. Food and Drug Administration--Congresses.
Harvard subject headings:
Drugs--Standards--Congresses.
Food additives--Standards--Congresses.
United States. Food and Drug Administration--Congresses.
Princeton subject headings:
Drugs--Standards--Congresses.
Food additives--Standards--Congresses.
United States. Food and Drug Administration--Congresses.