00000cab a22000003a 4500 UP-99796217609871928 Buklod 20231008000132.0 a r |||| u| ta 110607s xx d | ||r ||||| || DEDUC eng Tupas, Isabelo Locally produced resource materials and improved textbooks Isabelo Tupas. p. 96-101 Resource programs (Education). Teaching Philippines Aids and devices. Textbooks Philippines. Education quarterly. 3, 1 & 2 (1955). FI UP Article