Columbia subject headings:
Gast, Peter, 1854-1918.
Nietzsche, Friedrich Wilhelm, 1844-1900.
Harvard subject headings:
Gast, Peter, 1854-1918.
Nietzsche, Friedrich Wilhelm, 1844-1900
Princeton subject headings:
Gast, Peter, 1854-1918.
Nietzsche, Friedrich Wilhelm, 1844-1900.