Columbia subject headings:
Harvard subject headings:
Cartography--Political aspects--Portugal.
Portugal--Colonies--History--20th century.
Portugal--Politics and government--1910-1974.
Propaganda--Portugal--History--20th century.
Princeton subject headings:
Cartography--Political aspects--Portugal.
Portugal--Colonies--History--20th century.
Portugal--Politics and government--1910-1974.
Propaganda--Portugal--History--20th century.