College algebra and trigonometry / Leticia L. Castillo ... [et al.] ... - Manaluyong City : National Book Store, c2008. - viii, 772 p. : ill. ; 26 cm. Includes index. ISBN: 9710867989 Subjects--Topical Terms: Algebra.Trigonometry. LC Class. No.: QA154.2 / .C64 2008