TY - JOUR A1 - Beres, David A1 - Obers, Samuel J. T1 - The Effects of Extreme Deprivation in Infancy on Psychic Structure in Adolescence. A Study in Ego Development JF - The Psychoanalytic Study of the Child, Yale University Press, Vol. 5 (1950), pp. 212-235. Y1 - 1950 ER -