TY  - GEN
AU  - King, Leslie A.
AU  - Sedefov, Roumen
TI  - Early-warning system on new psychoactive substances : operating guidelines
SN  - 9789291682812
PY  - 2007///
CY  - Lisbon
PB  - EMCDDA
KW  - drugs
KW  - early warning system
KW  - epidemiologie
KW  - monitoring
KW  - richtlijnen
ER  -