Columbia subject headings:
Kaliningradskai︠a︡ oblastʹ (Russia)--Description and travel.
Kaliningradskai︠a︡ oblastʹ (Russia)--History--20th century.
Harvard subject headings:
Kaliningradskai︠a︡ oblastʹ (Russia)--Description and travel.
Kaliningradskai︠a︡ oblastʹ (Russia)--History.
Princeton subject headings: