Sotelo, Diane Camille C. Banghay-aralin sa Makabayan 3/ Diane Camille C. Sotelo. - Philippines; In The Grade School, Inc., c2011. - v59 n9, pages 388-390; 27cm. ISSN: 2094-8042 Subjects--Topical Terms: Programmed instruction--Makabayan. Dewey Class. No.: DPer 370.105 M72 Jan-Dec 2011 v59-60