Piaget, Jean,  1896-1980., <br/><br/>
The essential Piaget /  [print] 
edited by Howard E. Gruber and J. Jacques Voneche. 
 - New York :  Basic Books,  (c)1977. 
 - xlii, 881 pages :  illistrations ;  25 cm. 
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<br/><br/><label>LCCN: </label>76009337 //r91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition in children.<br/>Biology.
<br/><br/><label>LC Class. No.: </label>BF723 BF723.V946.E874 1977