Columbia subject headings:
Idea (Philosophy)--History--18th century.
Kant, Immanuel, 1724-1804.
Harvard subject headings:
Idea (Philosophy)--History--18th century.
Kant, Immanuel, 1724-1804
Princeton subject headings:
Idea (Philosophy)--History--18th century.
Kant, Immanuel, 1724-1804.