Weiss, Carol H. <br/><br/>
Evaluation research : methods for assesing program effectiveness / 
Carol H. Weiss. 
 - New Jersey  Prentice Hall  1972 
 - 160 p. 
<br/><br/><label>ISBN: </label>0132921936 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PROGRAMAS SOCIALES