Discrete and combinatorial mathematics : an applied introduction / Ralph P. Grimaldi. Grimaldi, Ralph P. Mathematics. Computer science Mathematics. Combinatorial analysis. QA39.2 .G748 2004 511 21 GRD Includes bibliographical references and index. Boston : Pearson Addison Wesley, c2004. c2004. 2004 Text xix, 833, 32, 91, 24 p. : eng