TY  - GEN
AU  - Dorn, Nicholas
AU  - James, Christine
AU  - South, Nigel
TI  - The limits of informal surveillance : four case studies in identifying neighbourhood heroin problems
PY  - 1987///
CY  - London
PB  - ISDD
KW  - dataverzameling
KW  - drugs
KW  - heroïne
KW  - onderzoeksrapporten
KW  - Verenigd Koninkrijk
ER  -