Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Kant, Immanuel, 1724-1804.
Rousseau, Jean-Jacques, 1712-1778.
Sociology.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831
Kant, Immanuel, 1724-1804--Sociology.
Rousseau, Jean-Jacques, 1712-1778
Sociology.
Princeton subject headings: