Columbia subject headings:
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Romania--Transylvania.
Transylvania (Romania)--Foreign relations--Soviet Union.
Transylvania (Romania)--History--1918-1945.
Harvard subject headings:
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Romania--Transylvania.
Transylvania (Romania)--Foreign relations--Soviet Union.
Transylvania (Romania)--History--1919-
Transylvania (Romania)--History--1940-1947.
Princeton subject headings:
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Romania--Transylvania.
Transylvania (Romania)--Foreign relations--Soviet Union.
Transylvania (Romania)--History--1940-1947.