Piaget, Jean,  1896-1980 <br/><br/>
The child's conception of number/ 
[Translated by C. Gattegno and F. M. Hodgson] 
 - London,  Routledge & Paul  [1952], repr. 1964 
 - ix, 248 p. ;  22 cm. 
 - International library of psychology, philosophy and scientific metho d .
<br/><br/> Translation of La genáese du nombre chez l'enfant. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number concept in children.<br/>Cognition in children.
<br/><br/><label>Dewey Class. No.: </label>155.4