Harnack, R. Victor <br/><br/>
Group discussion :  theory and technique / 
R. Victor Harnack, Thorrel B. Fest, Barbara Schindler Jones 
 - 2nd ed. 
 - Englewood Cliffs, N. J. :  Prentice-Hall,  1977 
 - xiv, 299 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0133652475 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Discussion