Columbia subject headings:
Harvard subject headings:
Droste zu Hülshoff, Bernd von, Freiherr, 1938-
Ecologists--Germany--Biography.
Environmentalists--Germany--Biography.
Forests and forestry--Germany--History.
World Heritage areas--Conservation and restoration--History.
Princeton subject headings:
Droste zu Hülshoff, Bernd von, Freiherr, 1938-
Ecologists--Germany--Biography.
Environmentalists--Germany--Biography.
Forests and forestry--Germany--History.
World Heritage areas--Conservation and restoration--History.