Piaget, Jean,  1896- <br/><br/>
The child's conception of physical causality / 
by Jean Piaget ; translated by Marjorie Gabain 
 - London :  Routledge & Kegan Paul,  1930 
 - viii, 309 p. :  ill. ;  21 cm. 
 - International library of psychology, philosophy and scientific method .
<br/><br/> Includes indexes 
<br/><br/><label>ISBN: </label>0710061196 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child psychology