RT Book T1 Future time perspective and its relation to the effects of external stimulation and activity upon time estimation in delinquent and non-delinquent male adolescents A1 Howenstine, Robert Jay LA English PP Ann Arbor, Mich. PB Univ. Microfilms YR 1974 UL https://krimdok.uni-tuebingen.de/Record/1121804195 K1 Hochschulschrift