616.855 <br/>

   David R.Beukelman<br/>
                  Augmentative and Alternative communication 
/author David R.Beukelman, Pat Mirenda. 
 - 604 page. -
<br/><br/><br/>eng  latin 
<br/><br/>                 <label>ISBN: </label>9781557663337 
<br/><br/>                 <label>Түлхүүр үг: </label>, medicineenglish