RT Article T1 Target groups for preventing aids among intravenous drug users JF Journal of applied social psychology VO 17 IS 3 SP 251 OP 268 A1 DesJarlais, Don A2 Friedman, Samuel R. LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/1636915213 K1 AIDS K1 Drogenabhängigkeit