Ramos, Ethel Grace A., The new science links teacher's resource material 2/ Ethel Grace A. Ramos, Socorro S. Pizarro. - Revised Edition - Quezon City: Rex Book Store, 2017. - xIiv, 144 pages : illustrations, tables, figures 26 cm. English ISBN: 978-971-23-8481-3 Subjects--Topical Terms: Science. Dewey Class. No.: 500 / R175t