Columbia subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900.
Schopenhauer, Arthur, 1788-1860.
Wagner, Richard, 1813-1883--Criticism and interpretation.
Wagner, Richard, 1813-1883--Philosophy.
Harvard subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900
Schopenhauer, Arthur, 1788-1860
Wagner, Richard, 1813-1883--Criticism and interpretation.
Wagner, Richard, 1813-1883--Philosophy.
Princeton subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900.
Schopenhauer, Arthur, 1788-1860.
Wagner, Richard, 1813-1883--Criticism and interpretation.
Wagner, Richard, 1813-1883--Philosophy.