00675cam a2200193 4500 105398896 TxAuBib 20080611120000.0 120610s2012||||||||||||||||||||||||eng|u 39964 Project Gutenberg PGUSA eng TxAuBib Dietzgen, Joseph. The Positive Outcome of Philosophy The Nature of Human Brain Work. Letters on Logic [Gutenberg] / by Joseph Dietzgen; translated by Ernst Unterman. Project Gutenberg, 2012. Project Gutenberg. Freely available. Electronic text. Unterman, Ernst, Translator. http://www.gutenberg.org/license Rights