Columbia subject headings:
Harvard subject headings:
Baltic States--History--Soviet occupation, 1939-1941--Congresses.
Princeton subject headings:
Baltic States--History--1940-1991--Congresses.
Baltic States--History--Soviet occupation, 1939-1941--Congresses.
Baltic States--Relations--Soviet Union--Congresses.
Conference papers and proceedings.
Soviet Union--Relations--Baltic States--Congresses.