Bertcher, Harvey J <br/><br/>
Group participation :  techniques for leaders and members / 
Harvey J. Bertcher. 
 - Newbury Park, CA :  Sage Pub,  c1979. 
 - 179 p. : ill. 
 - Sage human services guifdes; 10 .
<br/><br/> Includes references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Small groups<br/>Social groups<br/>Social participation<br/>Leadership