Mapa, Felina G. Introduction to calculus Felina G. Mapa, Flor V. Cejalvo - Manila: National Book Store, 1984. - viii, 432 pages; 25 cm. Subjects--Topical Terms: 1.Calculus. I.Mapa, Felina G. II.Cejalvo, Flor V. LC Class. No.: QA 303 / I6196