Columbia subject headings:
Harvard subject headings:
Denazification--Germany--Düsseldorf--History.
Education, Secondary--Germany--Düsseldorf--History.
Germany--History--1945-1955.
Reconstruction (1939-1951)--Germany
Princeton subject headings:
Denazification--Germany--Düsseldorf--History.
Education, Secondary--Germany--Düsseldorf--History.
Germany--History--1945-1955.
Reconstruction (1939-1951)--Germany.