Columbia subject headings:
History--Study and teaching.
Schopenhauer, Arthur, 1788-1860.
Strauss, David Friedrich, 1808-1874.
Wagner, Richard, 1813-1883.
Harvard subject headings:
History--Study and teaching
Schopenhauer, Arthur, 1788-1860
Strauss, David Friedrich, 1808-1874.
Wagner, Richard, 1813-1883
Princeton subject headings:
History--Study and teaching.
Schopenhauer, Arthur, 1788-1860.
Strauss, David Friedrich, 1808-1874.
Wagner, Richard, 1813-1883.