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Williams, M. & Seligman, E. (1969) Hans Dieckmann: Probleme der Lebensmitte—Krise, Umkehr, Neubeginn (Problems of the middle years—crisis, a turning back, new beginnings. Psychologisch Gesehen, No. 8, ed. H. Fischle-Carl. Stuttgart, Bonz, 1968. pp. 84. DM 3.80.). Journal of Analytical Psychology 14:86