Columbia subject headings:
Harvard subject headings:
Soviet Union--Relations--Yugoslavia--Sources.
Soviet Union--Relations--Yugoslavia.
Yugoslavia--Relations--Soviet Union--Sources.
Yugoslavia--Relations--Soviet Union.
Princeton subject headings:
Soviet Union--Foreign relations--1917-1945--Sources.
Soviet Union--Foreign relations--Yugoslavia--Sources.
Yugoslavia--Foreign relations--1918-1945--Sources.
Yugoslavia--Foreign relations--Soviet Union--Sources.