Columbia subject headings:
Harvard subject headings:
Czechoslovakia--History--1945-1992.
Czechoslovakia--Relations--Germany (East)
Germany (East)--History.
Germany (East)--Relations--Czechoslovakia
Princeton subject headings:
Czechoslovakia--History--1945-1992.
Czechoslovakia--Relations--Germany (East)--History.
Germany (East)--History.
Germany (East)--Relations--Czechoslovakia--History.