Columbia subject headings:
Africa, North--Societies, etc.--Directories.
Associations, institutions, etc.--Washington (D.C.)--Directories.
Middle East--Societies, etc.--Directories.
Harvard subject headings:
Africa, North--Societies, etc.--Directories.
Associations, institutions, etc.--Washington (D.C.)--Directories.
Middle East--Societies, etc.--Directories.
Princeton subject headings: