Columbia subject headings:
Harvard subject headings:
Asia, Central--Relations--Russia--Congresses.
Asia, Central--Relations--Soviet Union--Congresses.
Russia--Relations--Asia, Central--Congresses.
Soviet Union--Ethnic relations--Congresses.
Soviet Union--Relations--Asia, Central--Congresses.
Princeton subject headings:
Asia, Central--Relations--Russia--Congresses.
Asia, Central--Relations--Soviet Union--Congresses.
Russia--Relations--Asia, Central--Congresses.
Soviet Union--Ethnic relations--Congresses.
Soviet Union--Relations--Asia, Central--Congresses.