dr.n     subrahmanyam  brijlal <br/><br/>
a text book of optics 

 - newdelhi  s. chand and company ltd  1966 
<br/><br/><label>ISBN: </label>978-81-219-2611-9 
<br/><br/><label>Dewey Class. No.: </label>535  / SUB/A