modern math for first year high school students ; modern approach to mathematics teachings ; discovery and meaning Fabra, Norberto F. creator Villanueva, I.V. Jacobo, Martha E. text Manila Philippine Book Company c1972 monographic 214 p. : some ill. ; tabs and figs. ; 22 cm. Norberto F. Fabra, I.V. Villanueva, Martha E. Jacobo. Mathematics Philippines Fil. 510 F122 1972