Columbia subject headings:
Hungary--Relations--Soviet Union.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--History.
Magyar Szocialista Munkáspárt--History.
Soviet Union--Relations--Hungary.
Harvard subject headings:
Hungary--Relations--Soviet Union.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--History.
Magyar Szocialista Munkáspárt--History.
Soviet Union--Relations--Hungary.
Princeton subject headings: