The abacus  December 2013 

 - Colombo  Capital Media  2013 
 - 64 p.  some Colour 
<br/><br/><label>ISBN: </label>22793860 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ABACUS<br/>BOOKS BOX B0959<br/>MAGAZINE
<br/><br/><label>Dewey Class. No.: </label>B0959  / LDC