Perrett, Heli E. <br/><br/>
Monitoring and evaluation of communication support activities in the low-cost sanitaion projects /    
by Heli E. Perrett. 
 - Washington, D.C. :   United Nations,   c1984. 
 - 26 p. ;    25 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication in social action --Evaluation.------<br/>Communication in social work.--Evaluation.------
<br/><br/><label>Dewey Class. No.: </label>MISR 302.2 PER