Columbia subject headings:
Beli͡aev, I. T. (Ivan Timofeevich)
Chaco Boreal (Paraguay and Bolivia)--History.
Paraguay--Emigration and immigration.
Russians--Paraguay.
Harvard subject headings:
Beli͡aev, I. T. (Ivan Timofeevich), 1875-1957.
Beli︠a︡ev, I. T. (Ivan Timofeevich), 1875-
Chaco Boreal (Paraguay and Bolivia)--History.
Ethnologists--Russia (Federation)--Biography.
Paraguay--Emigration and immigration.
Russians--Paraguay.
Princeton subject headings:
Beli︠a︡ev, I. T. (Ivan Timofeevich), 1875-1957.
Chaco Boreal (Paraguay and Bolivia)--History.
Paraguay--Emigration and immigration.
Russians--Paraguay.