Hyde, D. M. Georgie <br/><br/>
Piaget and conceptual development: with a cross- cultural study of number and quantity 

 - London  Holt, Rinehart and Winston  1970 
 - xiv,246p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Piaget, Jean, 1896-
<br/><br/><label>LC Class. No.: </label>BF723.C5H9