Columbia subject headings:
Europe, Eastern--History--1918-1945.
Europe, Eastern--History.
Harvard subject headings:
Europe, Eastern--History--1918-1945.
Europe, Eastern--History.
Princeton subject headings:
Baltic States--Foreign relations--Germany.
Cities and towns--Europe, Eastern--History.
Europe, Eastern--Civilization.
Europe, Eastern--Politics and government.
Germany--Foreign relations--Baltic States.
Germany--Foreign relations--Soviet Union.
Poland--Military policy.
Poland--Politics and government--1918-1945.
Soviet Union--Foreign relations--Germany.