the new grade 9 Ferriols-Pavico, Josefina Ma. Morales-Ramos, Anna Cherylle. Bayquen, Aristea V. Silverio, Angelina A. Ramos, John Donnie A. text Quezon City Phoenix Publishing House c2018 2nd ed. monographic xii, 482 p. : figs. and tables ; 28 cm. Josefina Ma. Ferriols-Pavico [and four others]. Includes bibliographical references, glossary and index. Science Fil. 500 E967 2018 978-971-06-4716-3