Caro, Francis G, ed. <br/><br/>
Readings in evaluation research 

 - New York  Rusell Sage foundation  1971 
 - xiv, 418 p.; 23cm. 
<br/><br/><label>ISBN: </label>871542021 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluative research