Varadachari, P S; Thangarajan, P <br/><br/>
Ancillary physics, Vol.2: Light, sound, electricity and magnetism 

 -  National Publishing Company, Madras  1959 
 - 74 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530  VAR-A.2