Sethi, N. K. and Raizada, S. B. <br/><br/>
Text-Book of Optics 
For Junior Students 
 - 3 
 - Delhi  Premier Publishing Co.  1950 
 - 494 
<br/><br/><label>Subjects--Personal Names: </label> Physics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics