Columbia subject headings:
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831
Logic.
Marx, Karl, 1818-1883--Contributions in logic.
Marx, Karl, 1818-1883. Kapital
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Logic.
Marx, Karl, 1818-1883--Logic.
Marx, Karl, 1818-1883. Kapital.