By Johnson Robert E.   Hajcak C. A.   in Environmental Claims Journal

ISSN:1040-6026|19|1-2|88-96

Routledge Ltd‎(2007)‎

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By Weaver Michael F.   Hoffman Heather J.   Johnson Robert E.   Mauck Kimberly   in Journal of Addictive Diseases

ISSN:1055-0887|25|2|17-24

Haworth Press‎(2006)‎

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By Kamo Sandra L.   Hanley Thomas B.   Hess David F.   Dahl Peter S.   Johnson Robert E.   in Canadian Journal of Earth Sciences

ISSN:1480-3313|48|2|161-185

NRC Research Press‎(2011)‎

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