Helms, Donald B. <br/><br/>
Exploring Child Behavior 
/by Donald B. Helms 
 - New York:  Rinehart and Winston;  1976. 
 - xvi,539p. 
<br/><br/><label>ISBN: </label>0030577462 
<br/><br/><label>Dewey Class. No.: </label>155.41  / HEL/E