Corliss, Edith L. R. <br/><br/>
Selection of hearing aids 
Edith L. R. Corliss. 
 - Washington, D. C.  United States Department of Commerce, National Bureau of Standards  1951 
 - iv, 17 p.  il.  23 cm. 
 - E. U. National Bureau of Standards circular  516 .
<br/><br/> O198 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aparatos para la sordera
<br/><br/><label>LC Class. No.: </label>RF300  / .C66 1951