Differential equations nork Leopando, Gabriel A., Ramos, Frederick O., Berico, Edwin O., Oliquino, Audie B., Gedaria, Carlito V., Corderro, Marcelino S., Diona, Myrna G., Isaac, Emelita A., Torres, Aureluz, L., Publico, Juan L., Jr, Fadrigalan, Catalina M., Batongbakal, Amalia D.R