By Pinkerton S.D.   Holtgrave D.R.   Layde P.M.   in Preventive Medicine

ISSN:0091-7435|30|1|64-69

Academic Press‎(2000)‎

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By Pinkerton S.D.   Johnson-Masotti A.P.   Derse A.   Layde P.M.   in Evaluation and Program Planning

ISSN:0149-7189|25|1|71-83

Elsevier‎(2002)‎

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