Columbia subject headings:
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Political and social views.
Liberty--Philosophy
Marx, Karl, 1818-1883--Political and social views.
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Political and social views.
Liberty--Philosophy.
Marx, Karl, 1818-1883--Political and social views.