Subtraction 

 - 2 volumes ;  cm 
 - Time for math .
 - Time for math. .
<br/><br/> Primary 
<br/><br/><label>ISBN: </label>9788191056518 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subtraction<br/>Mathematical recreations
<br/><br/><label>Dewey Class. No.: </label>513.212