edited by Günter Albrecht, Wolfgang Ludwig-Mayerhofer

W. de Gruyter 1995 Prevention and intervention in childhood and adolescence 17

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edited by Günter Albrecht, Hans-Uwe Otto with the assistance of Susanne Karstedt-Henke and Karin Böllert

Walter de Gruyter 1991 Prevention and intervention in childhood and adolescence 11

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