Sat Pal and Harbans Lal <br/><br/>
Textbook of Two Dimensional Geomtry 

 - New Delhi  New age international pvt  ltd.  1996 
 - 571 
<br/><br/><label>ISBN: </label>81-224-0925-3 
<br/><br/><label>Dewey Class. No.: </label>516   Sat. N6