Ratan Mohan Khan <br/><br/>
Analytical geometry and vector algebra 

 - 2nd ed. 
 - Kolkata  NCBA  2015 
 - vii, 59p.  24x16cm. 
<br/><br/><label>ISBN: </label>9788173810168  235 
<br/><br/><label>Dewey Class. No.: </label>516  / KHA/ANA