International review of research in mental retardation  

 - London:   Academic Press,  1968 
 - 288p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Research  
<br/><br/><label>Universal Decimal Class. No.: </label>616.899.001.5(05)