TY - JOUR A1 - Mayes, Lida C. A1 - Cohen, Donald J. T1 - The Social Matrix of Aggression. Enactments and Representations of Loving and Hating in the First Years of Life JF - The Psychoanalytic Study of the Child, Yale University Press, Vol. 48 (1993), pp. 145-169. Y1 - 1993 ER - TY - JOUR A1 - Cohen, Phyllis M. A1 - Solnit, Albert J. T1 - Play and Therapeutic Action JF - The Psychoanalytic Study of the Child, Yale University Press, Vol. 48 (1993), pp. 049-063. Y1 - 1993 ER -