Lindgren, Henry Clay,  1914- <br/><br/>
Educational psychology in the classroom / 
Henry Clay Lindgren 
 - 6th ed. 
 - New York :  Oxford University Press,  1980 
 - 796 p. :  ill. ;  23 cm. 
<br/><br/><label>LCCN: </label>79-12013 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational psychology