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Start Over You searched for: Collections World War 2, 1939-1949 Remove constraint Collections: World War 2, 1939-1949 Subjects Juvenile Delinquency Remove constraint Subjects: Juvenile Delinquency Subjects Twin Studies as Topic Remove constraint Subjects: Twin Studies as Topic

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1. The etiology of child behavior difficulties, juvenile delinquency, and adult criminality, with special reference to their occurrence in twins