Ramos, Ethel Grace A., The new science links teacher's resource material 1/ Ethel Grace A. Ramos, Paz Cielo R. Justo. - Revised Edition - Quezon City: Rex Book Store, 2017. - xIvi, 123 pages : illustrations, tables, figures 26 cm. English ISBN: 978-971-23-8480-6 Subjects--Topical Terms: Science. Dewey Class. No.: 500 / R175t