RT Article T1 Comparative research in the drug field JF European journal on criminal policy and research VO 6 IS 3 SP 357 OP 367 A1 Odegard, Einar LA English YR 1998 UL https://krimdok.uni-tuebingen.de/Record/1639811451 K1 Drogenforschung K1 Drogenpolitik K1 Europa