Columbia subject headings:
Europe, Eastern--History--1918-1945.
Harvard subject headings:
Europe, Eastern--History--1918-1945.
Europe, Eastern--History--1945-
Germany--History--1933-1945.
Soviet Union--History--1925-1953.
Princeton subject headings:
Europe, Eastern--History--1918-1945.
Germany--History--1933-1945.
Soviet Union--History--1925-1953.