Gust, W. <br/><br/>
The blind telephonist :  technology and organization of avocation for the blind / 
W. Gust 
 - Munchen :  Siemens and Halske Aktiengesellschaft,  1957 
 - 142 p. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blind
<br/><br/><label>Dewey Class. No.: </label>331.59