Ault, Ruth L. <br/><br/>
Children's cognitive development :  Piaget's theory and the process approach / 
by Ruth L. Ault 
 - New York :  Oxford University Press,  1977 
 - x, 193 p. :  ill. ;  21 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 19.95 (pbk) 
<br/><br/><label>Subjects--Personal Names: </label><br/>Piaget, Jean, 1896- 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition in children<br/>Child psychology
<br/><br/><label>Dewey Class. No.: </label>136.72