Khanna, M. L. <br/><br/>
Spherical  Astronomy 

 - 19th. /   2009. 
 - Meerut:  Jai  Prakash  Nath  &  Company,  2009. 
 - 452p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Mathematics, Techniques  &  equipment. 
<br/><br/><label>Dewey Class. No.: </label>522.7