Columbia subject headings:
Deutsche Akademie der Naturforscher Leopoldina--History.
Natural history--Study and teaching--Germany--History.
Harvard subject headings:
Deutsche Akademie der Naturforscher Leopoldina--History.
Natural history--Study and teaching--Germany--History.
Princeton subject headings:
Deutsche Akademie der Naturforscher Leopoldina--History.
Natural history--Study and teaching--Germany--History.