Columbia subject headings:
Communism and religion.
Marx, Karl, 1818-1883.
Religion and sociology.
Troeltsch, Ernst, 1865-1923.
Weber, Max, 1864-1920.
Harvard subject headings:
Communism and religion.
Marx, Karl, 1818-1883
Religion and sociology.
Troeltsch, Ernst, 1865-1923.
Weber, Max, 1864-1920.
Princeton subject headings: