Clifford, Martin,  1910- <br/><br/>
Microphones-how they work & how to use them / 
by Martin Clifford. 
 - Blue Ridge Summit, Pa. :  G/L Tab Books,  1977. 
 - 224 p. :  ill. ;  22 cm. 
<br/><br/> 'No. 875.'  Includes index. 
<br/><br/><label>ISBN: </label>0830678751 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microphone.