RT Article T1 Methodological issues in drug use prevention: Theoretical foundations JF Substance use & misuse VO 32 IS 12/13 SP 1643 OP 1648 A1 Flay, B. R. A1 Petraitis, J. A2 Petraitis, J. LA English YR 1997 UL https://krimdok.uni-tuebingen.de/Record/163987335X K1 Drogenprävention K1 Forschung