Sharma,L.P. Saxena,H.C. <br/><br/>
A Text Book of Sound 

 - New Delhi  S. Chand and Company  1978 
 - p.303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Supcrposition of Waves<br/>Production and Propagation of Sound
<br/><br/><label>Dewey Class. No.: </label>534 S132S