Columbia subject headings:
Kaliningradskai︠a︡ oblastʹ (Russia)--Economic conditions--18th century.
Kaliningradskai︠a︡ oblastʹ (Russia)--History--18th century.
Kaliningradskai︠a︡ oblastʹ (Russia)--Politics and government--18th century.
Harvard subject headings:
Princeton subject headings:
Kaliningradskai︠a︡ oblastʹ (Russia)--Economic conditions--18th century.
Kaliningradskai︠a︡ oblastʹ (Russia)--History--18th century.
Kaliningradskai︠a︡ oblastʹ (Russia)--Politics and government--18th century.