Columbia subject headings:
Germany--Politics and government--1990-
Germany--Relations--Poland.
Poland--Politics and government--1989-
Poland--Relations--Germany.
Harvard subject headings:
Germany--Politics and government--1990-
Germany--Relations--Poland--Congresses.
Germany--Relations--Poland.
Poland--Politics and government--1989-
Poland--Relations--Germany
Poland--Relations--Germany--Congresses
Princeton subject headings: