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2. The monitoring the future project after thirty-two years: Design and procedures;Bachman,2006
3. Factors associated with adolescent initiation of injection drug use;Fuller,2001
4. Alcohol & drug abuse: Is parity for the treatment of substance use a: Disorders really sensible?;Greenfield;Psychiatric Services,2005
5. Monitoring the future national survey results on drug use, 1975–2008;Johnston,2009