By Ross Dana   Schumacher Joseph E.   in Journal of Community Health

ISSN:0094-5145|29|6|499-509

Springer Publishing Company ‎(2004)‎

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By Dumchev Kostyantyn V.   Schumacher Joseph E.   Slobodyenyuk Pavel   Zhu Sha   Richman Joshua S.   in Journal of Substance Use

ISSN:1465-9891|12|2|83-94

Radcliffe Press‎(2007)‎

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