Ellis, Norman R. <br/><br/>
Handbook of mental deficiency  psychological theory and research. 

 - New York  McGraw-Hill  [1963] 
 - xv, 722 p.  illus., diagrs.  24 cm. 
 - McGraw-Hill series in psychology .
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>62021900 //r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental Retardation
<br/><br/><label>LC Class. No.: </label>BF435  / .E55 
<br/><br/><label>Dewey Class. No.: </label>132.2