Columbia subject headings:
Dialectic--History.
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Plato.
Harvard subject headings:
Aristotle
Dialectic.
Hegel, Georg Wilhelm Friedrich, 1770-1831--Contributions in dialectic.
Philosophy, Ancient.
Plato--Influence.
Princeton subject headings:
Dialectic--History.
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Plato.