Columbia subject headings:
Harvard subject headings:
Drugs--Bibliography.
Drugs--Indexes.
Pharmacology--Bibliography
Pharmacology--Indexes.
Reference books--Drugs.
Reference books--Pharmacology.
Princeton subject headings:
Drugs--Bibliography.
Drugs--Indexes.
Pharmacology--Bibliography.
Pharmacology--Indexes.
Reference books--Drugs.
Reference books--Pharmacology.