Wadsworth, Barry J. <br/><br/>
Piaget's theory of cognitive development :  an introduction for students of psychology and education / 
by Barry J. Wadsworth 
 - New York :  McKay,  1971 
 - xiii, 140 p. :  ill. ;  21 cm. 
<br/><br/> Also published New York: Longman 
<br/><br/>Bibliography: p. 135-138 
<br/><br/><label>ISBN: </label>0679301631 
<br/><br/><label>LCCN: </label>73151157 
<br/><br/><label>Subjects--Personal Names: </label><br/>Piaget, Jean, 1896-1980. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition in children
<br/><br/><label>Dewey Class. No.: </label>155.413