Research on drug use: a review of problems, needs and future perspectives.
Zentralarchiv für empirische Sozialforschung, Universität zu Köln, F.R.G.
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Reuband
D003431:Cross-Cultural Comparison; D003430:Cross-Sectional Studies; D005060:Europe / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D019966:Substance-Related Disorders / Q000453:epidemiology*