RT Article T1 Frequency and sequence of drug use: a longitudinal study from early adolescence to young adulthood JF Journal of drug education VO 16 IS 2 SP 101 OP 120 A1 Newcomb, M. D. A2 Bentler, Peter M. LA English YR 1986 UL https://krimdok.uni-tuebingen.de/Record/1641011173 K1 Verlaufsstudien K1 Suchtmittelmissbrauch