Columbia subject headings:
Poland--Economic conditions.
Poland--Politics and government--1980-1989.
Poland--Social conditions--1980-1989.
Harvard subject headings:
NSZZ "Solidarność" (Labor organization)
Poland--Economic conditions--1945-
Poland--Politics and government--1980-1989
Poland--Social conditions--1980-
Princeton subject headings:
Poland--Economic conditions--1981-1990.
Poland--Politics and government--1981-1990.
Poland--Social conditions--1980-1989.