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Blank, H. R. (1982) The Psychoanalytic Study of the Child. XXXIV, 1979: Developmental Considerations of Ambivalence. Part 2 of An Exploration of the Relations of Instinctual Drives and the Symbiosis-Separation-Individuation Process. Henri Parens. Pp. 385-420.. Psychoanalytic Quarterly 51:332