Marcelo, Cecilia M. iMath 9 : k to 12 curriculum series / Cecilia M. Marcelo and Nenet M. Penaranda - Philippines : iBook Publishing, Inc., 2017. - 328 pages : figures ; 28 cm. ISBN: 9789719980384 Subjects--Topical Terms: Mathematics Dewey Class. No.: 516 / M314i