TY - JOUR A1 - Allee, W. C. T1 - Cooperation among Animals, revised Ed., New York (Harry Schuman) 1951, pp. 7-15, 195-197, 205-206, 23-25, 30-31, 60-61, 176f, 200-213. Y1 - 1951 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/3737 N1 - Scan of Fromm's xeroxcopy ER -