00437nam a22001457a 4500008004100000020001500041050001900056100002200075245006200097250001200159260003500171300001600206650002100222650004800243220707b        |||||||| |||| 00| 0 eng d  a0803959362  aH97b.M64 1995  aMohr, Lawrence B.  aImpact Analysis for Program Evaluation/bLawrence B. Mohr  a2nd ed.  aLondonbSage Publicationc1995  axxii, 311p.  aPolicy sciences   aEvaluation researchvsocial action programs