Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Kierkegaard, Søren, 1813-1855.
Marx, Karl, 1818-1883.
Philosophy, German--19th century.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831
Kierkegaard, Søren, 1813-1855
Marx, Karl, 1818-1883
Philosophy, German--19th century.
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Marx, Karl, 1796-1877.
Philosophy, German--History.