Villaflor, Tomas V. Earthquake/ Tomas V. Villaflor. - Philippines: In the Grade School, Inc., c2011. - v60 n2, pages 69-70: illustrations; 27cm. ISSN: 2094-8042 Subjects--Topical Terms: Earthquakes. Dewey Class. No.: DPer 370.105 M72 Jan-Dec 2011 v59-60