TY - JOUR A1 - McDougall, William T1 - Principles of Collective Psychology, Other Conditions of National Life T2 - The Group Mind, New York (G.P. Putnam's Sons) 1920, pp. 68-71, 195-197. Y1 - 1920 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/16077 N1 - Xeroxcopy - with marks ER -