Mathur, D.S. <br/><br/>
Sound 

 - New Delhi  R.Chand & Co.  1973 
 - 248 
<br/><br/><label>Publisher. No.: </label> Select Publication House 
<br/><br/><label>Subjects--Personal Names: </label> Physics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics