Piaget Jean <br/><br/>
Child's conception of movements and speed. 

 - London  Routledge and Kegan Paul      1970 
 - xi,306p.  cm. 
<br/><br/><label>Standard No.: </label>41243 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>S1:6, L0