Columbia subject headings:
Veterinary drugs--Law and legislation--United States--Periodicals.
Veterinary drugs--United States--Periodicals.
Veterinary medicine--United States--Periodicals.
Harvard subject headings:
Veterinary drugs--Law and legislation--United States--Periodicals.
Veterinary drugs--United States--Periodicals.
Veterinary medicine--United States--Periodicals.
Princeton subject headings: