Columbia subject headings:
Communism--Russia (Federation)--Siberia.
Siberia (Russia)--Social conditions.
Social change.
Harvard subject headings:
Communism--Russia (Federation)--Siberia.
Siberia (Russia)--Social conditions.
Social change
Princeton subject headings:
Khanty.
Nentsy.
Ob Valley (R.S.F.S.R.).