RAM, BALLABH <br/><br/>
A Text Book of Co-ordinate Geometry  A Text Book of Co-ordinate Geometry, Lucknow : Prakashan Kendra, 1991 
BALLABH RAM 
 - Lucknow  Prakashan Kendra  1991 
<br/><br/><label>Dewey Class. No.: </label>516.5