Columbia subject headings:
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831
Nietzsche, Friedrich Wilhelm, 1844-1900
Philosophy, Modern--19th century.
Philosophy, Modern--20th century.
Sartre, Jean-Paul, 1905-1980
Princeton subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Nietzsche, Friedrich Wilhelm, 1844-1900.
Philosophy, Modern--19th century.
Philosophy, Modern--20th century.
Sartre, Jean-Paul, 1905-1980.