Learning mental maths 6 

 - New Delhi  Har- Anand Publications pvt Ltd  2008 
 - 79 p. ; ill. ; 28 cm 
<br/><br/><label>ISBN: </label>9788124112403 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510 LEA