Columbia subject headings:
Composers--Germany--Biography.
Nietzsche, Friedrich Wilhelm, 1844-1900--Adversaries.
Nietzsche, Friedrich Wilhelm, 1844-1900--Friends and associates.
Philosophers--Germany--Biography.
Wagner, Richard, 1813-1883--Adversaries.
Wagner, Richard, 1813-1883--Friends and associates.
Harvard subject headings:
Composers--Germany--Biography
Nietzsche, Friedrich Wilhelm, 1844-1900--Adversaries.
Nietzsche, Friedrich Wilhelm, 1844-1900--Friends and associates.
Philosophers--Germany--Biography
Wagner, Richard, 1813-1883--Adversaries.
Wagner, Richard, 1813-1883--Friends and associates.
Princeton subject headings:
Composers--19th century--Biography.
Nietzsche, Friedrich Wilhelm, 1844-1900.
Philosophers--19th century--Biography.
Wagner, Richard, 1813-1883.