Allen, R. Angel Algebra Elemental - 4 - México : Prentice Hall - XXIV, 568 p. / 26cm Incluye Apendice e Índice ISBN: 970-17-0119-4 Subjects--Topical Terms: 1. ALGEBRA LC Class. No.: QA152 2 A54 Dewey Class. No.: 512.920 A581a