Ballabh, Dr. Ram. <br/><br/>
A.  Text  Book  of  Co - Ordinate  Geometry 

 - 12th /   1985. 
 - Lucknow:  Prakashan  Kendra,  1985. 
 - 391p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Mathematics, Co-Ordinate  Systems. 
<br/><br/><label>Dewey Class. No.: </label>516.16