TY - JOUR A1 - Jackson, E. B. A1 - Klatskin, E. H. A1 - Wilkin, L. S. T1 - Early Child Development in Relation to Degree of Flexibility of Maternal Attitude JF - R. S. Eissler et al. (Eds.), The Psychoanalytic Study of the Child, Vol. VII: The Mutual Influences in the Development of Ego and Id, New York (International Universities Press) 1952, pp. 393-428. Y1 - 1952 ER -