Columbia subject headings:
Harvard subject headings:
Prussia, East (Poland and Russia)--History, Military--20th century.
Prussia, East (Poland and Russia)--History--20th century.
Soviet Union. Raboche-Krestʹi︠a︡nskai︠a︡ Krasnai︠a︡ Armii︠a︡--History.
World War, 1939-1945--Campaigns--Prussia, East (Poland and Russia)
World War, 1939-1945--Occupied territories.
Princeton subject headings:
Prussia, East (Poland and Russia)--History--20th century.
Soviet Union. Raboche-Krestʹi︠a︡nskai︠a︡ Krasnai︠a︡ Armii︠a︡--History.
World War, 1939-1945--Campaigns--Prussia, East (Poland and Russia)
World War, 1939-1945--Occupied territories.