Columbia subject headings:
Dialectical materialism.
Engels, Friedrich, 1820-1895--Religion.
Idealism.
Marx, Karl, 1818-1883--Religion.
Religion--Philosophy.
Harvard subject headings:
Dialectical materialism.
Engels, Friedrich, 1820-1895--Religion.
Idealism.
Marx, Karl, 1818-1883--Religion.
Religion--Philosophy
Princeton subject headings: