Advances in understanding the offender: 1950 yearbook ; current opinion on the treatment and prevention of delinquency and crime ; papers given at the forty-third annual conference of the association in Atlantic City, April 25 and 27, 1950, and at the Congress of Correction in St. Lous, October 8-13, 1950 - Bell, Marjorie (Yearbook / National Probation and Parole Association, 1951)