The essential Piaget / 
edited by Howard E. Gruber and J. Jacques Voneche 
 - London :  Routledge& Kegan Paul,  c1977 
 - xlii, 881 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0710087780 :  PND 13.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition in children<br/>Knowledge, Theory of<br/>Biology
<br/><br/><label>Dewey Class. No.: </label>136.7