Soni, R. S. <br/><br/>
Co-ordinate geometry / 

 - New Delhi,  S. Chand & Company,  c1988. 
 - viii, 600p. ;  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>LC Class. No.: </label>1845 
<br/><br/><label>Dewey Class. No.: </label>516