HANDBOOK of mental deficiency psychological therapy and research / 
edited by Norman R.Ellis 
 - 2nd ed. 
 - New York  Lawrence Erlbaum associate pub.  1979 
 - xxix, 785 p. 
<br/><br/> Includes reference and index. 
<br/><br/><label>ISBN: </label>898590027 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation<br/> Phychological theory<br/>Mental deficiency-research
<br/><br/><label>Dewey Class. No.: </label>616.8588  / HAN