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By Beresford P.J.   Basinski-Gray J.M.   Chiu J.K.C.   Chadwick J.S.   Aston W.P.   Rohrbach L.A.   Johnson C.A.   Mansergh G.   Fishkin S.A.   Neumann F.B.   in Evaluation and Program Planning

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Elsevier‎(1997)‎

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