Piaget, Jean,  1896-1980 <br/><br/>
The child's conception of the world / 
Jean Piaget; translated by Joan and Andrew Tomlinson. 
 - London :  Routledge & Kegan Paul ,  1929, repr. 1951. 
 - ix, 397 p. :  ill. ;  23 cm. 
<br/><br/> Half-title: International library of psychology and scientific metho d. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child study.
<br/><br/><label>Dewey Class. No.: </label>155.4