Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Heidegger, Martin, 1889-1976.
Husserl, Edmund, 1859-1938.
Phenomenology--History.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831
Hegel, Georg Wilhelm Friedrich, 1770-1831--Contributions in phenomenology.
Heidegger, Martin, 1889-1976
Heidegger, Martin, 1889-1976--Contributions in phenomenology.
Husserl, Edmund, 1859-1938
Husserl, Edmund, 1859-1938--Contributions in phenomenology.
Phenomenology--History--19th century.
Phenomenology--History--20th century
Phenomenology--History.
Princeton subject headings:
Metaphysics.
Phenomenology.