Columbia subject headings:
Medicine--Bibliography--Catalogs.
National Library of Medicine (U.S.)--Bibliography--Catalogs.
Harvard subject headings:
Medicine--Periodicals--Bibliography--Catalogs
National Library of Medicine (U.S.)--Bibliography--Catalogs--Periodicals.
Princeton subject headings:
Catalogs.
Medicine--Bibliography--Catalogs.
National Library of Medicine (U.S.)--Bibliography--Catalogs.