Columbia subject headings:
Gusev Region (Kaliningradskai͡a oblastʹ, Russia)--Politics and government.
Harvard subject headings:
Gusev Region (Kaliningradskai͡a oblastʹ, Russia)--Politics and government.
Gusev Region (Kaliningradskai︠a︡ oblastʹ, R.S.F.S.R.)--Politics and government.
Princeton subject headings:
Gusev (Russia)--Politics and government.
Local government--Prussia (Germany)--State supervision.
Prussia (Germany)--Politics and government--1870-1947.