Argal-Fontanilla, Gina Ostique Teaching proficiency of secondary teachers in mathematics II: its influence on the performance of students in intermediate algebra Gina Ostique Argal-Fontanilla - Midsayap, Cotabato NDU-NDKC Consortium Program 2010. - xviii, 120p. Educational Administration Subjects--Uniform Titles: Educational administration LC Class. No.: T-00615