Gupta, Nishi <br/><br/>
Mental maths 
Nishi Gupta 
 - New Delhi  Har- Anand Publications pvt Ltd  2003 
 - 56p 
<br/><br/><label>ISBN: </label>9788124107768 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510 GUP