RT Book T1 A study to determine the effects of institutionalization on juvenile delinquents' school motivation and Learner self concept A1 Yarbrough, Vestal E. LA English PP Ann Arbor, Mich. PB Univ. Microfilms YR 1980 UL https://krimdok.uni-tuebingen.de/Record/1092646868 K1 Hochschulschrift