Columbia subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Political and social views--Congresses.
Harvard subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Political and social views--Congresses.
Political science--Philosophy--Congresses
Princeton subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Political and social views--Congresses.