Klausmeier Herbert J. <br/><br/>
Cognitive development of children and youth : A longitudinal study 

 - New York, USA  Academic Press  1978 
 - vi,327p. 
 - Educational psychology .
<br/><br/><label>ISBN: </label>0-12-411355-9 
<br/><br/><label>Source: </label>Textual