Columbia subject headings:
Harvard subject headings:
Colonies--Africa--History--19th century.
Colonies--Africa--History--20th century.
Portugal--Colonies--Africa--History--19th century.
Portugal--Colonies--Africa--History--20th century.
Portugal--Politics and government--1861-1889
Portugal--Politics and government--1900-1910
Portugal--Politics and government--1910-1974
Princeton subject headings:
Colonies--Africa--History--19th century.
Colonies--Africa--History--20th century.
Portugal--Colonies--Africa--History--19th century.
Portugal--Colonies--Africa--History--20th century.
Portugal--Politics and government--1861-1889.
Portugal--Politics and government--1900-1910.
Portugal--Politics and government--1910-1974.