Berk Richard A, ed Freeman, Howard E, ed Trochim, William M K <br/><br/>
Research design for program evaluation 

 - Beverly hills  Sage publications, inc.  1984 
 - 272 p.; 22cm. 
 - Contemporary evaluation research V.6 .
<br/><br/><label>ISBN: </label>803920377 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation research - social action program<br/>Research design<br/>Social research<br/>Social science research<br/>Social sciences - methodology