Columbia subject headings:
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Criticism and interpretation.
Hegel, Georg Wilhelm Friedrich, 1770-1831. De orbitis planetarum.
Planets--Orbits
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich; 1770-1831. Dissertato philerosarphica de orbitis planetarum.
Planets--Orbits.