Hurvitz, Joel. <br/><br/>
Special devices for hard of hearing, deaf, and deaf-blind persons / 
Joel Hurvitz, Richard Carmen. 
 - 1st ed. 
 - Boston :  Little, Brown,  c1981. 
 - ix, 297 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0316383619 (pbk.) 
<br/><br/><label>LCCN: </label>81082683  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication devices for people with disabilities--United States--Catalogs.<br/>Deaf--Means of communication--Equipment and supplies--United States--Catalogs.<br/>Blind, Apparatus for the--Catalogs.<br/>Deafblind people--Means of communication--Equipment and supplies--United States--Catalogs.
<br/><br/><label>LC Class. No.: </label>RF 300  / .H8 
<br/><br/><label>Dewey Class. No.: </label>621.38/0880816