Lial, Margaret L. College algebra / Margaret L. Lial, John Hornsby, David I. Schneider - 9th. ed. - Boston, MA. : Pearson Education, 2005 - xiii, 716 p. : ill., gráficas, tablas ; 26 cm. Includes index ISBN: 0321227573 Subjects--Topical Terms: Álgebra LC Class. No.: QA 154.3 / L53 2005