Lindgren, Henry Clay,  1914- <br/><br/>
Educational psychology in the classroom / 
Henry Clay Lindgren. 
 - 4th ed. 
 - New York :  Wiley,  [1972]. 
 - xvi, 516 p. :  ill. ;  25 cm. 
<br/><br/>Bibliogr.: p. 481-509. 
<br/><br/><label>ISBN: </label>0471536458 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational psychology.