Piaget, Jean <br/><br/>
The child's conception of space 

 - London :  Routledge and Kegan Paul,   1956. 
 - xii, 490p.;  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Premadasa Udagama Collection<br/>E.L Wijemanna Collection<br/>Differential and developmental psychology
<br/><br/><label>Dewey Class. No.: </label>155.4  / PIA