Jensen, Paz Lacsamana <br/><br/>
Calculations made easy:  Addition & multiplication, subtraction & division/ 
by Paz Lacsamana-Jensen 
 - Mandaluyong City:  Anvil publishing , Inc.,  c2012 
 - ix,158p.:  22.2 cm. 
<br/><br/><label>ISBN: </label>978-971-27-2648-4 
<br/><br/><label>Dewey Class. No.: </label>BCir.515  / L119c