Gruber H E <br/><br/>
Essential piaget    an interpretive reference and guide 
Gruber H E; Voneche J J 
 - LOndon  Routledge         1977 
 - xvi, 881p.  cm. 
<br/><br/><label>Standard No.: </label>82,399 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S1xM96, L7