Barr,Ronald G. <br/><br/>
The Cambridge Encyclopedia Of Child Development 
/by Ronald G.Barr et.al. 
 - New York  Cambridge University Press  2005 
 - 670p. 
<br/><br/><label>ISBN: </label>13978052165117 
<br/><br/><label>Dewey Class. No.: </label>305.23103  / HOP/T