Ram Ballabh <br/><br/>
Textbook of co-ordinate Geometry 
Ram Ballabh 
 - 13th 
 - Lucknow  Prakashan Pub.  1991 
 - 391 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry
<br/><br/><label>Dewey Class. No.: </label>516.1  / RAM N1