Degolacion, Roberto J., <br/><br/>
Soaring 21st century mathematics grade 1/ 
Roberto J. Degolacion, [and three others] 
 - Quezon City:  Phoenix Publishing House, Inc.,  2017. 
 - x, 398 pages:  illustrations, tables;  28 cm. 
<br/><br/><br/>English. 
<br/><br/><label>ISBN: </label>978-971-06-4237-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510  / D317s