Lindgren, Henry Clay, 1914- <br/><br/>
Educational psychology in the classroom 
Henry Clay Lindgren 
 - 3rd ed. 
 - New York  John Wiley & Sons  1967 
 - 686 p. : ill. ; 24 cm. 
<br/><br/> Includes indexes  Original published in 1956 
<br/><br/>p. 647-677 
<br/><br/><label>LCCN: </label>67-12564 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational psychology