Columbia subject headings:
Deutsche Akademie der Naturforscher Leopoldina--History.
Harvard subject headings:
Deutsche Akademie der Naturforscher Leopoldina--History--Congresses.
Germany--Intellectual life--Congresses.
Learned institutions and societies--Germany--History--Congresses.
Preussische Akademie der Wissenschaften--History--Congresses.
Princeton subject headings:
Germany--Intellectual life--Congresses.
Learned institutions and societies--Germany--History--Congresses.
Preussische Akademie der Wissenschaften--History--Congresses.