The Social Democrats in Imperial Germany: A Study in Working-Class Isolation and National Integration.by Guenther Roth; Reinhard Bendix;The Origins of Social Liberalism in Germany.by Donald G. Rohr;Stillborn Revolution: The Communist Bid for Power in Germany, 1921-1923.by Werner T. Angress;A History of the Weimar Republic. Volume II: From the Locarno Conference to Hitler's Seizure of Power.by Erich Eyck; Harlan P. Hanson; Robert G. L. Waite