Drew, Clifford J.,  1943- <br/><br/>
Mental retardation :  a life cycle approach / 
Clifford J. Drew, Donald R. Logan, Michael L. Hardman 
 - 4th ed. 
 - Columbus :  Merrill,  1988 
 - 516 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0675208319 
<br/><br/><label>LCCN: </label>87-072033 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mentally handicapped--United States<br/>Mental retardation