Columbia subject headings:
Europe--History--1648-1789.
Europe--Intellectual life--17th century.
Europe--Intellectual life--18th century.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Harvard subject headings:
Europe--Intellectual life--17th century.
Europe--Intellectual life--18th century.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
Princeton subject headings: