RT Article T1 Race/ethnicity and gender differences in the drugs-violence relationship JF Journal of psychoactive drugs VO 22 IS 3 SP 293 OP 303 A1 Spunt, Barry LA English YR 1990 UL https://krimdok.uni-tuebingen.de/Record/1640160353 K1 Drogenmissbrauch K1 Gewalttätigkeit