@book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx / Engels Gesamtausgabe. Erste Abteilung. Band 1. 1. Halbband, ed. by D. Rjazanov, Frankfurt a. M. (Marx-Engels-Archiv) 1927.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx-Engels Archiv, ed. by D. Rjazanov, Frankfurt a. M. (Marx-Engels-Archiv) 1927.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx-Engels Archiv, ed. by D. Rjazanov, Frankfurt a. M. (Marx-Engels-Archiv) 1927.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx / Engels Gesamtausgabe. Erste Abteilung. Band 1. 2. Halbband, ed. by D. Rjazanov, Berlin (Marx-Engels-Verlag) 1929.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx / Engels Gesamtausgabe. Dritte Abteilung. Band 1, ed. by D. Rjazanov, Berlin (Marx-Engels-Verlag) 1929.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx / Engels Gesamtausgabe. Erste Abteilung. Band 2, ed. by D. Rjazanov, Berlin (Marx-Engels-Verlag) 1930.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx / Engels Gesamtausgabe. Dritte Abteilung. Band 2, ed. by D. Rjazanov, Berlin (Marx-Engels-Verlag) 1930.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {Marx / Engels Gesamtausgabe. Dritte Abteilung. Band 3, ed. by D. Rjazanov, Berlin (Marx-Engels-Verlag) 1930.}, language = {de} } @book{MarxEngels, author = {Marx, Karl and Engels, Friedrich}, title = {The german ideology, New York (International Publishers) 1939.}, language = {en} } @book{Engels, author = {Engels, Friedrich}, title = {The condition of the working-class in England in 1844, London (George Allen \& Unwin) 1950.}, language = {en} }