Hyde, D. M. Georgie. <br/><br/>
Piaget and conceptual development :  with a cross-cultural study of number and quantity / 
[by] D.M.G. Hyde. 
 - London ; New York :  London ; New York :  Holt, Rinehart & Winston,  1970. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0039100731 
<br/><br/><label>Subjects--Personal Names: </label><br/>Piaget, Jean
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition in children.
<br/><br/><label>LC Class. No.: </label>BF 723.C5 HYD 1970