Zigler, Edward <br/><br/>
Understanding mental retardation 
Edward Zigler and Robert M.Hodapp 
 - Cambridge  University Press  c1986  
 - xii,292.:plates.,tables.;   22cm. 
<br/><br/><label>ISBN: </label>0-521-31878-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation
<br/><br/><label>Dewey Class. No.: </label>616.8588  / ZIG