Columbia subject headings:
Philippines--Economic conditions--1946-
Philippines--Politics and government--1946-
Working class--Philippines.
Harvard subject headings:
Labor unions--Philippines.
Philippines--Economic conditions--1946-
Philippines--Economic conditions--1946-1986.
Philippines--Politics and government--1973-1986.
Working class--Philippines.
Princeton subject headings:
Labor--Philippines.
Philippines--Economic conditions--1946-
Philippines--Politics and government.