Columbia subject headings:
Harvard subject headings:
Darré, Richard Walther, 1895-1953.
Ecology--Germany--History--20th century.
Environmental policy--Germany--History--20th century.
Germany--Politics and government--1933-1945.
Princeton subject headings:
Darré, Richard Walther, 1895-1953.
Germany--Politics and government--1933-1945.
Politicians--Germany--Biography.