Piaget, Jean,  1896-1980. <br/><br/>
The child's conception of number /  
Jean Piaget  
 - New York :  Humanities Press,   1952. 
 - ix, 248 p. ;   22 cm. 
 - International library of psychology, philosophy, and scientific method .
 - International library of psychology, philosophy, and scientific method. .
<br/><br/> Translation of La gen�se du nombre chez l'enfant. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child psychology.<br/>Number concept.
<br/><br/><label>Dewey Class. No.: </label>155.41323   / PIC 1952