Columbia subject headings:
Harvard subject headings:
Heidegger, Martin, 1889-1976
Nietzsche, Friedrich Wilhelm, 1844-1900
Philosophy, German
Philosophy, Modern
Play (Philosophy)
Princeton subject headings:
Heidegger, Martin, 1889-1976.
Nietzsche, Friedrich Wilhelm, 1844-1900.
Philosophy, German.
Philosophy, Modern.
Play (Philosophy)