Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Heidegger, Martin, 1889-1976.
Metaphysics.
Pöggeler, Otto.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Criticism and interpretation.
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Heidegger, Martin, 1889-1976.
Metaphysics.
Pöggeler, Otto.