Dimbayao-Genio, Maria Teresa. The essence of play and toys/ Maria Teresa Dimbayao-Genio. - Philippines: In the Grade School, Inc., c2010-2011. - v59 n5, pages 197-198: illustrations; 28 cm. ISSN: 2094-8042 Subjects--Topical Terms: Children--Learning. Dewey Class. No.: DPer 370.105 M72 June 2010-Mar 2011 v. 59 n. 1-10