RT Article T1 Involving parents of high-risk youth in drug prevention: A three-year longitudinal study in boys & girls clubs JF The journal of early adolescence VO 17 IS 1 SP 21 OP 50 A2 Mark, Melvin M. A2 Kaltreider, D. L. A2 Aikin, K. J. LA English YR 1997 UL https://krimdok.uni-tuebingen.de/Record/163915910X K1 Jugendliche K1 Drogenprävention