Columbia subject headings:
Harvard subject headings:
Prussia, East (Poland and Russia)--History--20th century.
World War, 1939-1945--Prussia, East (Poland and Russia)
Princeton subject headings:
Germans--Prussia, East (Poland and Russia)--History--20th century.
Massacres--Poland.
Population transfers--Germans--History--20th century.
Prisoners of war--Poland.
Prisoners of war--Russia.
Prussia, East (Poland and Russia)--History, Local.
Prussia, East (Poland and Russia)--History.
War crimes--Poland.
World War, 1939-1945--Campaigns--Poland.
World War, 1939-1945--Poland--History.