Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1918-1933
Germany--Relations--Lithuania.
Germany--Relations--Soviet Union.
Lithuania--Relations--Germany.
Prussia, East (Poland and Russia)--Politics and government.
Soviet Union--Relations--Germany.
Princeton subject headings:
Germany--Politics and government--1918-1933.
Germany--Relations--Lithuania.
Germany--Relations--Soviet Union.
Lithuania--Relations--Germany.
Prussia, East (Poland and Russia)--Politics and government.
Soviet Union--Relations--Germany.