Sehgal, D.L., Chopra, K.L. and Sehgal, N.K. <br/><br/>
Modern Physics 

 - 7 
 - New Delhi  Sultan Chand & Sons  1992 
 - 4.118 
<br/><br/><label>Publisher. No.: </label> Gangaram Book Bureau 
<br/><br/><label>Subjects--Personal Names: </label> Physics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics