Columbia subject headings:
Harvard subject headings:
Marx, Karl, 1818-1883--Philosophy.
Philosophy, Russian--19th century.
Philosophy, Russian--20th century.
Socialism and religion--Russia--History.
Princeton subject headings:
Marx, Karl, 1818-1883--Philosophy.
Philosophy, Russian--19th century.
Philosophy, Russian--20th century.
Socialism and religion--Russia--History.