RT Article T1 Psychotherapeutic, licit and illicit use of drug among adolescents: an epidemiological perspective JF Journal of adolescent health VO 8 IS 1 SP 36 OP 51 A2 Johnston, Lloyd D. LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/1633593983 K1 Drogenmissbrauch K1 Psychotherapie