Companion to concrete mathematics two vol. bound as one - Melzak, Zdzislaw A. (Dover Publ., 2007)
Enth.: Vol. 1 Mathematical techniques and varoius applications. Vol. 2 Mathematical ideas, modeling and applications. - Unabridged republ. in one volume of the two works orig. publ. by Wiley, New York, 1973 and 1976