TY - JOUR A1 - Hadfield, J. A. T1 - Introduction T2 - J. A. Hadfield (Ed.), Psychology and Modern Problems, New York (Longmans Green and Co.) 1936, pp. 1-25. Y1 - 1936 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/11318 N1 - Dedicated by Bahary Family 2004 ER -