Salvador, Maita Songco <br/><br/>
When zero left number land/ 
story by Maita Songco Salvador; illustrations by Iori Espiritu. 
 - Quezon City:  Adarna House,  c2013. 
 - [30] p.:  ill.;   23 cm. 
<br/><br/><label>ISBN: </label>978-971-508-451-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numbers--Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>FIC Sa182 2013