Columbia subject headings:
Labor--Latin America.
Latin America--Politics and government--1948-1980.
Urbanization--Latin America.
Harvard subject headings:
Labor--Latin America.
Latin America--Politics and government--1948-
Latin America--Politics and government--1948-1980.
Urbanization--Latin America
Working class--Latin America.
Princeton subject headings:
Latin America--Politics and government--1948-1980.
Urbanization--Latin America.
Working class--Latin America.