Report

Hartnoll, Richard and Frischer, Martin and Wiessing, Lucas and Bello, Pierre-Yves and Kraus, L and McKeganey, Neil and D'Ippoliti, Daniela and Domingo-Salvany, Antonia and Smit, Filip and Hay, Gordon (1999) Methodological guidelines to estimate the prevalence of problem drug use on the local level. Lisbon: European Monitoring Centre for Drugs and Drug Addiction.