Schmuck, Richard A. <br/><br/>
Group processes in the classroom / 
Richard A. Schmuck, Patricia A. Schmuck. 
 - 3rd ed. 
 - Dubuque, Iowa :  Wm. C. Brown,  1979. 
 - 279 p. :  23 cm. 
<br/><br/><label>ISBN: </label>0697060918 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Group work in education.<br/>Social groups.