Columbia subject headings:
Harvard subject headings:
Germany--Economic policy--1933-1945
Industrialists--Germany--Ruhr (Region)--History--20th century.
National socialism--Economic aspects--Germany--Ruhr (Region)
Nazi propaganda--Economic aspects--Germany--Ruhr (Region)
Political persecution--Germany--Ruhr (Region)--History.
Princeton subject headings:
Germany--Economic policy--1933-1945.
Industrialists--Germany--Ruhr (Region)--History--20th century.
National socialism--Economic aspects--Germany--Ruhr (Region).
Nazi propaganda--Economic aspects--Germany--Ruhr (Region).
Political persecution--Germany--Ruhr (Region)--History.