Columbia subject headings:
Simmel, Georg, 1858-1918.
Sociology.
Weber, Max, 1864-1920.
Harvard subject headings:
Simmel, Georg, 1858-1918
Sociology.
Weber, Max, 1864-1920.
Princeton subject headings:
Simmel, Georg, 1858-1918.
Sociology.
Weber, Max, 1864-1920.