00000ctm a22000003a 4500 UP-99796217608386395 Buklod 20080502102524.0 m |o d | ta 080502s1987 xx d r |||| u| (iLib)UPD-00020361442 DARC eng LG 993.5 1987 A7 L46 PLDT Dansalan digital switching system Catalina C. Leonin, Ma. Victoria L. Medina, Ma. Carmen O. Turla. 1987. 50 leaves ill. Vita. Thesis (Bachelor of Science in Architecture)--University of the Philippines Diliman. Philippine Long Distance Telephone, Co. Dansalan (Davao) Telephone switching systems, Electronic. Digital telephone systems. Leonin, Catalina C. Medina, Ma. Victoria L. Turla, Ma. Carmen O. Manahan, Geronimo V. thesis adviser. UP FI Thesis UPD DARC LG 993.5 1987 A7 L46 Thesis