Columbia subject headings:
Association of American Geographers--Directories.
Geography--Study and teaching (Higher)--Canada--Directories.
Geography--Study and teaching (Higher)--United States--Directories.
Harvard subject headings:
Association of American Geographers--Directories.
Geography--Study and teaching (Higher)--Canada--Directories.
Geography--Study and teaching (Higher)--United States--Directories.
Princeton subject headings:
Association of American Geographers--Directories.
Directories.
Geography--Study and teaching (Higher)--Canada--Directories.
Geography--Study and teaching (Higher)--United States--Directories.