@book{Kautsky, author = {Kautsky, K.}, title = {Die materialistische Geschichtsauffassung. 1. Band, Berlin (Verlag J. H. W. Dietz Nachf.) 1927.}, language = {de} } @book{Kautsky, author = {Kautsky, K.}, title = {Die materialistische Geschichtsauffassung. 2. Band, Berlin (Verlag J. H. W. Dietz Nachf.) 1927.}, language = {de} }