Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Heidegger, Martin, 1889-1976.
History--Philosophy--History--19th century.
History--Philosophy--History--20th century.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831
Heidegger, Martin, 1889-1976
History--Philosophy--History--19th century
History--Philosophy--History--20th century
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Heidegger, Martin, 1889-1976.
History--Philosophy--History--19th century.
History--Philosophy--History--20th century.