PDF - http://www.kcl.ac.uk/icpr/publications/SW Findings Paper.pdf
Kathryn Curran, Tiggey May and Hamish Warburton
"The paper presents key findings from a pilot project designed to map illegal drug routes at a regional level. The aim of the project was to gather supply information on class A drug markets. The project had two strands: a survey distributed among professionals working with drug users and a scientific strand where seized drugs were profiled."
