Super, Charles M. <br/><br/>
Cognitive changes in Zambian children during the late pre-school yea rs /  
Charles M. Super. 
 - Lusaka :    Human Development Research unit,    1972. 
 - 70 p. :    ill. 
 - H. D. R. U. reports;    no.22 .
<br/><br/><label>Subjects--Topical Terms: </label><br/> Cognition -- in infancy & childhood