Piaget, Jean <br/><br/>
Child's conception of space tr by F J Langdon and J L Lunzer 

 - London, UK:  Routledge and Kegan Paul UK;  1956. 
 - xii,490p. illus  cm. 
<br/><br/><label>Source: </label> TB 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY