Piaget, Jean,  1896- <br/><br/>
Main trends in psychology / 
Jean Piaget. 
 - New York :  Harper Torchbooks,  1973. 
 - 72 p. ;  22 cm. 
<br/><br/> 'Originally published as chapter 3 in Main trends of research in the social and human sciences, Part 1, Mouton/Unesco 1970.' 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0061317802 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Methodology.<br/>Psychology--Research.