RT Book T1 The controlled trial in institutional research: Paradigm or pitfall for penal evaluators? T2 Home Office research study JF Home Office research study A1 Clarke, Ronald V. 1941- A2 Cornish, Derek B. 1939- LA English PP London PB Her Majesty's Stationery Office YR 1972 UL https://krimdok.uni-tuebingen.de/Record/1601017006 CN 365/.942 SN 0113401159