Columbia subject headings:
Communism--Poland--Congresses.
NSZZ "Solidarność" (Labor organization)--Congresses.
Poland--Politics and government--1980-1989--Congresses.
Harvard subject headings:
Communism--Poland--Congresses.
NSZZ "Solidarność" (Labor organization)--Congresses.
Poland--Politics and government--1980-1989--Congresses.
Princeton subject headings:
Communism--Poland--Congresses.
NSZZ "Solidarność" (Labor organization)--Congresses.
Poland--Politics and government--1980-1989--Congresses.