RT Article T1 Predictors of disapproval toward 'hard drug' use among high school seniors in the US JF Prevention science VO 15 IS 5 SP 725 OP 735 A1 Palamar, Joseph J. LA English YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1912659077 DO 10.1007/s11121-013-0436-0