Khanna <br/><br/>
Sound & Waves 

 - New Delhi  S. Chand  1983 
 - 422 
<br/><br/><label>Publisher. No.: </label> Laxmi Book Distributors 
<br/><br/><label>Subjects--Personal Names: </label> Physics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics