Columbia subject headings:
Harvard subject headings:
Anti-fascist movements--Bessarabia (Moldova and Ukraine)--History.
Bessarabia (Moldova and Ukraine)--Annexation to the Soviet Union.
Bessarabia (Moldova and Ukraine)--Politics and government.
Communism--Bessarabia (Moldova and Ukraine)--History.
Princeton subject headings:
Bessarabia (Moldova and Ukraine)--History.
Romania--Foreign relations--Soviet Union.
Romania--History--1914-1944.
Soviet Union--Foreign relations--Romania.