RT Article T1 Prison as a modifier of drug using behaviour JF Addiction research VO 2 IS 2 SP 203 OP 215 A1 Shewan, David A1 Gemmell, Martin A1 Davies, John Booth 1944- LA English YR 1994 UL https://krimdok.uni-tuebingen.de/Record/163940726X K1 Strafvollzug K1 Drogenkonsum