Subramanyam, N Lal, Brij <br/><br/>
Textbook Of Optics 

 - 10 ed. 
 - New Delhi  S. Chand & Company  1980 
 - p.581 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometrical Optics<br/>Telescope
<br/><br/><label>Dewey Class. No.: </label>535 S941T