RT Article T1 Credible research practices to inform drug law enforcement JF Criminology & public policy VO 2 IS 3 SP 543 OP 556 A1 Manski, Charles F. LA English YR 2003 UL https://krimdok.uni-tuebingen.de/Record/1639623795 K1 Strafverfolgung K1 Drogendelikte K1 Drogenpolitik K1 Kriminologische Forschung K1 Politikberatung DO 10.1111/j.1745-9133.2003.tb00015.x