Szymanski, Robert A. Computers and information systems / Computers & information systems Robert A. Szymanski, Donald P. Szymanski, Donna M. Pulschen. - Upper Saddle River, NJ : Prentice Hall, c1995. - xxvii, 623 p. : ill. (some col.) ; 26 cm. Includes index. ISBN: 0024187674 (pbk.) LCCN: 94016833 Subjects--Topical Terms: Computer software.Computers. LC Class. No.: QA76.5 QA76.5 QA76.5 QA76.5 QA76.5 / .S98 1995 / .S98 / .S98 / .S98 / .S98 Dewey Class. No.: 004