Sinha, K. C. and Roy, P. K. <br/><br/>
A text book of co-ordinate geometry  A text book of co-ordinate geometry, Patna : Students Friends, 2002 
K. C. Sinha and P. K. Roy 
 - Patna  Students Friends  2002 
<br/><br/><label>Dewey Class. No.: </label>516.5