Helms Donald B <br/><br/>
Exploring child behavior. 
Helms Donald B; Turner Jeffrey S 
 - 2 
 - New York     Holt, Rinehart and Winston     1981 
 - xvi,539p.  cm. 
<br/><br/><label>Standard No.: </label>41051 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>S1, M1