Piaget, Jean,  1896- <br/><br/>
The child's conception of physical causality / 
by Jean Piaget 
 - London :  Routledge & K. Paul,  1970 
 - viii, 309 p. :  ill. ;  23 cm. 
<br/><br/> 'Translated by Marjorie Gabain' 
<br/><br/><label>ISBN: </label>0710061196 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child development<br/>Child psychology