Columbia subject headings:
Ethnology--Soviet Union--Congresses.
Rural population--Soviet Union--Congresses.
Soviet Union--Rural conditions--Congresses.
Villages--Soviet Union--Congresses.
Harvard subject headings:
Ethnology--Soviet Union--Congresses.
Rural population--Russia (Federation)--Congresses.
Rural population--Soviet Union--Congresses.
Soviet Union--Rural conditions--Congresses.
Villages--Soviet Union--Congresses.
Princeton subject headings:
Ethnology--Soviet Union--Congresses.
Rural population--Soviet Union--Congresses.
Soviet Union--Rural conditions--Congresses.
Villages--Soviet Union--Congresses.