Columbia subject headings:
Harvard subject headings:
Kaliningrad (Kaliningradskai︠a︡ oblastʹ, Russia)--History--Bibliography.
Princeton subject headings:
Kaliningrad (Kaliningradskai︠a︡ oblastʹ, Russia)--History--Bibliography.
Kaliningrad (Kaliningradskai︠a︡ oblastʹ, Russia)--History.