Columbia subject headings:
Harvard subject headings:
Africa, Portuguese-speaking--Economic conditions.
Africa, Portuguese-speaking--Social conditions.
Portugal--Colonies--Africa--Administration.
Portugal--Colonies--Africa--Economic conditions.
Portugal--Colonies--Africa--Social conditions.
Princeton subject headings:
Portugal--Colonies--Africa--Administration.
Portugal--Colonies--Africa--Economic conditions.
Portugal--Colonies--Africa--Social conditions.