Sethi , N.K.. <br/><br/>
Text Book of Optics: For Junior Students /  Textual Documents 
N.K.Sethi & S.B.Raizada. 
 - 3rd ed. / 
 - Delhi :  Premier Publishing Co. ,  1957. 
 - 494p. :  ill ;  22cm . 
<br/><br/><label>Subjects--Index Terms: </label>Optics G-Physics 
<br/><br/><label>Dewey Class. No.: </label>535  / Se 75 T