Columbia subject headings:
Constitutional history--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--History--Study and teaching.
Harvard subject headings:
Constitutional history--Soviet Union
Soviet Union--Foreign relations--1917-1945.
Soviet Union--History--Study and teaching.
Princeton subject headings:
Soviet Union--Constitutional history.
Soviet Union--Foreign relations--1917-.
Soviet Union--History--Study and teaching.