Habon, Santiago A., Breaking through science grade 2/ Santiago A. Habon, Caridad G. Gicaraya. - Quezon City: C & E Publishing, Inc., 2016. - ix, 432 pages ; colored illustrations; 26 cm. English ISBN: 978-971-98-0478-9 Subjects--Topical Terms: Scientific Progress. Dewey Class. No.: 500 / H1148