Torres, Herminia D. Calculus and analytic geometry : for business and economics / Herminia D. Torres - Manila, Philippines : National Book Store 1988 - x, 412 pages : illustrations ; 22 cm. ISBN: 971080359 Subjects--Topical Terms: Calculus.Geometry, Analytic. LC Class. No.: Fil QA303 / .T723 1984 Dewey Class. No.: F 515.6 T693c