Columbia subject headings:
Labor movement--Philippines--History--Sources--Indexes.
Philippine radical papers--Indexes.
Philippines--Politics and government--1946---Sources--Indexes.
Radicalism--Philippines--History--Sources--Indexes.
Socialism--Philippines--History--Sources--Indexes.
Harvard subject headings:
Communism--Philippines--Bibliography--Catalogs.
Philippines--Politics and government--1946-1973--Bibliography--Catalogs.
Philippines--Politics and government--1973-1986--Bibliography--Catalogs.
University of the Philippines. Library--Catalogs.
Princeton subject headings: