Hillman, Abraham P. Discrete and combinatorial mathematics / Abraham P. Hillman, Gerald L. Alexanderson, Richard M. Grassl. - San Francisco, Calif. : London : Dellen ; Collier Macmillan, c1987. - xiv, 626, [67] p. : ill. ; 25 cm. Includes index. ISBN: 0023545801 : $27.00 Subjects--Topical Terms: Mathematics.Computer science--Mathematics.Combinatorial analysis. LC Class. No.: QA39.2 / .H555 1987 Dewey Class. No.: 510