Sehgal, N.K. <br/><br/>
Modern Physics 

 - 9th ed. 
 - New Delhi:  Sultan Chand & Sons  2013 
 - 1.1- 21.8p. 
<br/><br/><label>ISBN: </label>9788180549526  350 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>530.14 SEH-N