Columbia subject headings:
Heidegger, Martin, 1889-1976.
Nietzsche, Friedrich Wilhelm, 1844-1900.
Harvard subject headings:
Heidegger, Martin, 1889-1976
Nietzsche, Friedrich Wilhelm, 1844-1900
Princeton subject headings:
Heidegger, Martin, 1889-1976.
Nietzsche, Friedrich Wilhelm, 1844-1900.