Piaget, Jean, 1896-  Piaget, Jean, 1896- <br/><br/>
Six psychological studies / 
with and introd., notes and glossary by David Elkind ; trans. from the French by Anita Tenzer ... 
 - London :  University of London Press,  [1968] 
<br/><br/>Bibliographical note and reference: p. [159]-164. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition.