Mental Subnormality: <br/><br/>
Mental subnormality: Modern Trends in Research 

 - London,  Pitman Medical,  1970. 
 - x, 260 p., plate.  ill. 
<br/><br/><label>ISBN: </label>0272760331 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation<br/>Mental retardation.
<br/><br/><label>LC Class. No.: </label>MED RC570  / .M43