Sobel, Max A. Algebra / Max A. Sobel, Norbert Lerner - 4 - México : Prentice Hall - xv, 590 p. / 25 cm. Ap‚ndice A: 96 p. ISBN: 968-880-680-3 Subjects--Topical Terms: 1.ALGEBRA LC Class. No.: QA154.2 S6118 1996 Dewey Class. No.: 512 S677a