The Positive Outcome of Philosophy. the Nature of Human Brain Work. Letters on Logic. the Positive Outcome of Philosophy. Translated by Ernest ... by Eugene Dietzgen and Joseph Dietzgen, Jr

Positive Outcome of Philosophy. the Nature of Human Brain Work. Letters on Logic. the Positive Outcome of Philosophy. Translated by Ernest Untermann. with an Introd. by Anton Pannekoek. Edited by Eugene Dietzgen and Joseph Dietzgen, Jr

Bebel's Reminiscences