Mandal, T.M. . <br/><br/>
Text Book of Sound /  Textual Documents 
T.M.Mandal. 
 - 7 th ed / 
 - Kolkata :  H.Chatterjee ,  1957. 
 - 268p. :  ill ;  20cm . 
<br/><br/><label>Subjects--Index Terms: </label>T/G-Physics Physics 
<br/><br/><label>Dewey Class. No.: </label>534  / M 312 T