TY - GEN ED - European Monitoring Centre for Drugs and Drug Addiction [EMCDDA] TI - Risk assessment of new psychoactive substances : operating guidelines SN - 9789291684021 PY - 2009/// CY - Lisbon PB - EMCDDA KW - drugs KW - onderzoeksmethoden KW - onderzoeksrapporten KW - richtlijnen KW - risicoschatting ER -