Columbia subject headings:
Christian union.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Harvard subject headings:
Christian union
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
Princeton subject headings:
Christian union.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.