Cognitive and mental development in the first five years of life; 
a review of recent research by Philip Lichtenberg and Dolores G. Norton. 
 - Washington, U.S.  Govt. Print. Off  1970. 
 - 111 p. 
<br/><br/>Bibliography: p. 100-111. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cognition in children<br/>Child development