TY - JOUR A1 - McDougall, William T1 - Co-operation of Tendencies T2 - The Energies of Men: A Study of the Fundamentals of Dynamic Psychology, New York (Charles Scribner's Sons) 1932, pp. 132-135. Y1 - 1932 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/16081 N1 - Xeroxcopy ER -