Mathesaurs :  mental maths workbook / 

 - Uttar Pradesh :  Om Books International,  2015. 
 - 120 p. :  ill. ;  25 cm. 
<br/><br/>Including bibliographical references and indexes.<br/> 
<br/><br/><label>ISBN: </label>9789384119386 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education --Maths--Primary education
<br/><br/><label>Dewey Class. No.: </label>510  / MAT