Math world :  fourth year / 
Marquez, Nelia T. 
 - Manila :  St. Augustine Publications, Inc.,  2000. 
 - v, 339 p.; 25.2cm. 
<br/><br/><label>ISBN: </label>9716832869 
<br/><br/><label>Dewey Class. No.: </label>Fil 510 M34 2000