Heward, William L. <br/><br/>
Exceptional children  an introductory survey of special education 
William L. Heward, Michael D. Orlansky. 
 - 4th ed.. 
 - New York  Merrill  1992 
 - various pagings: col.ill.; 26cm. 
<br/><br/><label>ISBN: </label>0 - 675 - 22200 - 1. 
<br/><br/><label>Dewey Class. No.: </label>371.9  / H60E