Columbia subject headings:
Hygiene--Societies, etc.--Directories.
Medicine--Canada--Societies, etc.--Directories.
Medicine--Societies, etc.--Directories.
Public health--Canada--Societies, etc.--Directories.
Harvard subject headings:
Princeton subject headings:
Directories.
Medicine--Canada--Societies, etc.--Directories.
Medicine--Societies, etc.--Directories.
Medicine--United States--Societies, etc.--Directories.
Public health--Canada--Societies, etc.--Directories.
Public health--Societies, etc.--Directories.
Public health--United States--Societies, etc.--Directories.