Columbia subject headings:
Soviet Union--Description and travel.
Soviet Union--Foreign relations.
Soviet Union--Politics and government--1936-1953.
Harvard subject headings:
Soviet Union--Description and travel.
Soviet Union--Foreign relations.
Soviet Union--Politics and government--1936-1953.
Princeton subject headings:
Soviet Union--Description and travel.
Soviet Union--Foreign relations.
Soviet Union--Politics and government--1936-1953.