RT Book T1 A study of the effect of differential work placement upon adjustment of youthful offenders in a correctional institution A1 Bhak, Albert Kiechung LA English PP Ann Arbor, Mich. PB Univ. Microfilms YR 1974 UL https://krimdok.uni-tuebingen.de/Record/1122516460 K1 Hochschulschrift