Ballabh, Dr.Ram. <br/><br/>
A  text  book of  co - ordinate  geometry 

 - 1st. 
 - Lucknow:  Prakashan  Kendra. 
 - 391p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Mathematics, Geometry. 
<br/><br/><label>Dewey Class. No.: </label>516.16