Columbia subject headings:
Poland--Politics and government--1945-1980.
Poland--Politics and government--1980-1989.
Polish people--Foreign countries--Politics and government--20th century.
Polish people--Political activity--Foreign countries--History--20th century.
Rzeczpospolita Polska (Government-in-exile)
Harvard subject headings:
Poland--Politics and government--1945-
Polish people--Foreign countries--Political activity.
Princeton subject headings: