Piaget, Primer <br/><br/>
How A Child Thinks 

 - New York  International Universities Press, Inc  1979 
 - 148 
<br/><br/> 1 Jean Piaget and His Theory 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>155.4