MacLean, G L <br/><br/>
Real Ear Sound Pressure Levels Developed by Three Portable Stereo System Earphones.  [electronic resource] 

 -  American journal of audiology  Nov 1992 
 - 52-5 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1059-0889 
<br/><br/><label>Standard No.: </label>10.1044/1059-0889.0104.52  doi