Columbia subject headings:
Kant, Immanuel, 1724-1804.
Ontology.
Harvard subject headings:
Kant, Immanuel, 1724-1804
Ontology--History--18th century.
Ontology.
Princeton subject headings:
Kant, Immanuel, 1724-1804.
Ontology--History--18th century.
Ontology.