Columbia subject headings:
Marx, Karl, 1818-1883.
Sociology--Germany--History.
Weber, Max, 1864-1920.
Harvard subject headings:
Marx, Karl, 1818-1883
Sociology--Germany--History
Weber, Max, 1864-1920.
Princeton subject headings:
Marx, Karl, 1818-1883.
Sociology--Germany--History.
Weber, Max, 1864-1920.