Working with Numbers 

 - Quezon City, Philippines :  SoundScope Literature Inc.,  2000 
 - 206 pages :  Tables, Illustrations ;  27cm. 
<br/><br/>Pre-Numerical Concepts--Numerical Concepts 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>971-827-020-5 
<br/><br/><label>Dewey Class. No.: </label>FIL 510  / M2971