TY - JOUR A1 - Burlingham, D. T. T1 - The Relation of Twins to Each Other T2 - A. Freud et al. (Eds.), The Psychoanalytic Study of the Child, Vol. III/IV, New York (International Universities Press) 1949, pp. 57-72. Y1 - 1949 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/6548 ER -