Mohr Lawrence B <br/><br/>
Impact analysis for program evaluation 
Lawrence B. Mohr 
 - London:  SAGE Publications,  1992 
 -  ix, 217p. 
<br/><br/> Includes bibliography and index 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0803949812 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation research (Social action programs)<br/>Policy science
<br/><br/><label>Dewey Class. No.: </label>361.61068  / MOI