Columbia subject headings:
Hydronymy.
Kaliningradskai︠a︡ oblastʹ (Russia)--Historical geography.
Lakes--Pregel River Watershed.
Lakes--Russia (Federation)--Kaliningradskai︠a︡ oblastʹ.
Names, Geographical--Poland.
Names, Geographical--Russia (Federation)--Kaliningradskai︠a︡ oblastʹ.
Poland--Historical geography.
Ponds--Pregel River Watershed.
Ponds--Russia (Federation)--Kaliningradskai︠a︡ oblastʹ.
Harvard subject headings:
Hydronymy
Kaliningradskai︠a︡ oblastʹ (Russia)--Historical geography.
Lakes--Russia (Federation)--Kaliningradskai͡a oblastʹ.
Lakes--Russia (Federation)--Pregel River Watershed.
Names, Geographical--Russia (Federation)--Kaliningradskai͡a oblastʹoblastʹ.
Ponds--Russia (Federation)--Kaliningradskai͡a oblastʹoblastʹ.
Ponds--Russia (Federation)--Pregel River Watershed.
Princeton subject headings: