Columbia subject headings:
Harvard subject headings:
Kalinskai︠a︡ oblastʹ (R.S.F.S.R.)--Description and travel.
Western Dvina River.
Princeton subject headings:
Kalininskai︠a︡ oblastʹ (Russia)--Description and travel.
Kalininskai︠a︡ oblastʹ (Russia)--Social life and customs.