Ruhle, Otto, Karl Marx, pp. 209-308.
Wilson, Edmund, To the Finland Station, p. 115.
Ruhle, Otto, Karl Marx, pp. 383-384.
Ruhle, Otto, Karl Marx, pp. 157-158.
Ruhle, Otto, Karl Marx, pp. 202-204.
Ruhle, Otto, Karl Marx, pp. 248-249.
Ruhle, Otto, Karl Marx, pp. 262.
Engels, Friedrich, Ludwig Feuerbach, International Publishers, New York, 1934, p. 31.
Conze, E., Dialectical Materialism, London, N.C.L.C Society, 1936, p. 35.
Conze, E., Dialectical Materialism, pp. 51–52; See also Engels, Friedrich, Socialism: Utopian and Scientific, pp. 47–48.
Quoted by V. Adoratsky, Dialectical Materialism, pp. 26–27.
Engels, Friedrich, Anti-Duhring, p. 138.
Engels, Friedrich, Anti-Duhring, p. 145.
McFadden, Charles J., The Philosophy of Communism, p. 50; see also C. Porter, The Carbon Compounds, p. 10.
Engels, Friedrich, Anti-Duhring, pp. 78, 85.
Engels, Friedrich, Anti-Duhring, p. 18.