Piaget, Jean <br/><br/>
Six psychological studies 
<label>/ by </label> Piaget, Jean 
<label>;</label> Elkind, David <label>;</label> Tenzer, A. 
 - Sussex  The Harvester Press  1980 
 - xviii,169p.  22 cm. 
<br/><br/><label>ISBN: </label>0855270985 
<br/><br/><label>Dewey Class. No.: </label>136.7  / PIA