Stewart D W <br/><br/>
Focus groups:theory of practice 

 - New Bury   Sage Publication         1990 
 - 153p.  cm. 
<br/><br/><label>Standard No.: </label>23641 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Sigma:b4, N0