Columbia subject headings:
Harvard subject headings:
Canada--Maps.
Central America--Maps.
China--Maps.
Cuba--Maps.
Japan--Maps.
Mexico--Maps.
Philippines--Maps.
United States--Maps.
Princeton subject headings:
Canada--Maps--Periodicals.
Central America--Maps--Periodicals.
China--Maps--Periodicals.
Cuba--Maps--Periodicals.
Japan--Maps--Periodicals.
Mapas Mexico--Periodicals.
Philippines--Maps--Periodicals.
United States--Maps--Periodicals.