Hurvitz, Joel  <br/><br/>
Special devices for hard of hearing, deaf, and deaf-blind persons 
Joel Hurvitz, Richard Carmen. 
 - 1st ed 
 - Boston  Little Brown & Co.  1981. 
 - ix, 297 pages :    illustration,    28 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0316383619  pbk. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication devices for the disabled--United States--Catalogs<br/>Deaf--United States--Means of communication--Equipment and supplies--Catalogs<br/>Blind, Apparatus for the--Catalogs<br/>Blind--deaf--United States--Means of communication--Equipment and supplies--Catalogs<br/>Deafness--Rehabilitation--Catalogs<br/>Hearing Loss, Partial--Rehabilitation--Catalogs<br/>Self--Help Devices--Catalogs