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- Home Office Press Release (12.02.02), ‘Drugs Minister Highlights Saving in Criminal Justice Costs of Drug Treatment Expenditure’ , Home Office .
- Home Office Research Study . 2001 . Drug Misuse Declared in 2000: Results from the British Crime Survey , London : Home Office .
- European Monitoring Centre for Drugs and Drug Addiction ( 2001 ), Annual Report on the State of the Drugs Problem in the EU , EMCDDA .