Piaget, Jean <br/><br/>
Main trends in interdisciplinary research 

 - Newyork  Harper & Row  1970 
 - 91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Main,trends,interdisciplinary
<br/><br/><label>Dewey Class. No.: </label>300.72  PIA;1  R