Dologuin, Vida Utilization of instructional materials and academic performance of grade six students in rizal central elementary school / Vida Dologuin, Shiela Mae Matugas, Wella Solis - Digos City : UMDC November 2017. - 72 pages ; 29 cm. Subjects--Topical Terms: Education--Undergraduate thesis.--Elementary Dewey Class. No.: UT 0987 / D66