Aguaviva, Erlinda M.,  c1997. <br/><br/>
Basic Mathematics / 
Aguaviva, Erlinda M. ; Dayrit, Benjamin C. ; Yap, Avelina M. 
 - Philippines :  Rex Printing Company,Inc,  c1997. 
 - 175p. :  illus. ;  25.4cm. 
<br/><br/><label>ISBN: </label>971-23-2200-9