Mental Retardation / 
[edited by] Mary Beirne-Smith, Richard F. Ittenbach, James R. Patton. 
 - 5th ed. 
 - xiv, 647 p. :  ill. (some col.) ; 
<br/><br/> includes index 
<br/><br/>Includes bibliographical references  
<br/><br/><label>ISBN: </label>9780138949082 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation.<br/> Intellectual disability
<br/><br/><label>LC Class. No.: </label>RC 570 MEN 1998