Columbia subject headings:
Harvard subject headings:
Gibson, Charles, 1920-1985.
Latin America--History--To 1830.
Latin America--Social conditions.
Mexico--Civilization--Spanish influences.
Mexico--History--Spanish colony, 1540-1810.
Mexico--Social conditions--To 1810.
Spain--Colonies--History.
Spain--Colonies--Social conditions.
Princeton subject headings:
Gibson, Charles, 1920-1985.
Latin America--History.
Portugal--Colonies--History.
Spain--Colonies--History.