Columbia subject headings:
Harvard subject headings:
Descartes, René, 1596-1650--Criticism and interpretation.
Dialectic.
Hegel, Georg Wilhelm Friedrich, 1770-1831--Criticism and interpretation.
Logic.
Metaphysics
Philosophy, French--17th century.
Philosophy--History
Princeton subject headings:
Descartes, René, 1596-1650.
Hegel, Georg Ludwig Friedrich, 1807-1831.