Columbia subject headings:
Kant, Immanuel, 1724-1804.
Tetens, Johann Nicolas, 1736-1807.
Harvard subject headings:
Kant, Immanuel, 1724-1804
Tetens, Johann Nicolas, 1736-1807
Princeton subject headings:
Kant, Immanuel, 1724-1804.
Tetens, Johann Nicolas, 1736-1807.