Columbia subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Homes and haunts--Germany--Mainz (Rhineland-Palatinate)
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Harvard subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Congresses.
Mainz (Rhineland-Palatinate, Germany)--History--17th century--Congresses.
Mainz (Rhineland-Palatinate, Germany)--Intellectual life--17th century--Congresses.
Princeton subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Homes and haunts--Germany--Mainz (Rhineland-Palatinate).
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.