Columbia subject headings:
Germany--Politics and government--1933-1945.
National socialism.
Poland--History--Occupation, 1939-1945.
Harvard subject headings:
Germany--Politics and government--1933-1945.
National socialism.
Poland--History--Occupation, 1939-1945
Princeton subject headings:
Germany--Politics and government--1933-1945.
National socialism.
Poland--History--Occupation, 1939-1945.