Columbia subject headings:
Drugs--Handbooks, manuals, etc.
Materia medica--Handbooks, manuals, etc.
Therapeutics--Handbooks, manuals, etc.
Harvard subject headings:
Princeton subject headings:
Drugs--Handbooks, manuals, etc.
Materia medica--Handbooks, manuals, etc.
Therapeutics--Handbooks, manuals, etc.