Columbia subject headings:
Poland--Politics and government--1989-
Szczypiorski, Andrzej.
Harvard subject headings:
Poland--Politics and government--1945-
Poland--Politics and government--1945-1980
Poland--Politics and government--1980-1989
Szczypiorski, Andrzej
Princeton subject headings:
Poland--Politics and government--1945-.
Szczypiorski, Andrzej.