Columbia subject headings:
Communism--Bibliography.
Communist countries--Bibliography.
Soviet Union--Foreign economic relations--Bibliography.
Soviet Union--Foreign relations--1917-1945--Bibliography.
Soviet Union--Foreign relations--1945-1991--Bibliography.
Harvard subject headings:
Communism--Bibliography
Communist countries--Bibliography.
International relations--Bibliography
Soviet Union--Foreign economic relations--Bibliography.
Soviet Union--Foreign relations--1917-1945--Bibliography.
Soviet Union--Foreign relations--1945-1991--Bibliography.
Princeton subject headings:
Communism--Bibliography.
Communist countries--Bibliography.
Soviet Union--Foreign economic relations--Bibliography.
Soviet Union--Foreign relations--1917-1945--Bibliography.
Soviet Union--Foreign relations--1945-1991--Bibliography.