Columbia subject headings:
Serbia--Relations--Soviet Union--History.
Soviet Union--Relations--Serbia--History.
Harvard subject headings:
Serbia--Relations--Soviet Union
Soviet Union--Relations--Serbia
Princeton subject headings:
Russia--Politics and government--1881-1894.
Russia--Politics and government--1894-1917.
Russia--Relations--Yugoslavia--Serbia.
Serbia--Politics and government--1804-1918.
Serbia--Relations--Russia.