Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Influence--Congresses.
Marx, Karl, 1818-1883--Influence--Congresses.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Influence.
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Influence--Congresses.