Handbook of mental deficiency :  psychological theory and research / 
Edited by Norman R. Ellis 
 - New York :  McGraw-Hill,  1963. 
 - xv, 722 p. :  ill. ;  24 cm. 
 - McGraw-Hill series in psychology .
<br/><br/>Includes bibliographies and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation.
<br/><br/><label>Dewey Class. No.: </label>132.2  / HAN 1963