Columbia subject headings:
Health facilities--United States--Directories.
Health--Information services--United States--Directories.
Medical care--United States--Directories.
Medicine--Information services--United States--Directories.
Medicine--United States--Societies, etc.--Directories.
Public health--United States--Societies, etc.--Directories.
Harvard subject headings:
Health facilities--United States--Directories.
Health--United States--Information services--Directories.
Medical care--United States--Directories
Medicine--United States--Information services--Directories
Medicine--United States--Societies, etc.--Directories
Public health--United States--Societies, etc.--Directories.
Princeton subject headings:
Directories.
Health facilities--United States--Directories.
Health--United States--Information services--Directories.
Medical care--United States--Directories.
Medicine--United States--Information services--Directories.
Medicine--United States--Societies, etc.--Directories.
Public health--United States--Societies, etc.--Directories.