Human relations development : a manual for educators 
George M. Gazda...[et.al.]. 
 - Third edition. 
 -  National Book Store.  1984 
 - 262 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71082332-9 
<br/><br/><label>Dewey Class. No.: </label>371.46 H88 1984