00621pam a2200205 a 4500 0256118841 0256156107 (International ed.) DLC 658 IRW 1994 A040 Or. O'Brien, James A., Introduction to information systems / 7th ed. Burr Ridge, Ill. : Irwin, c1994. xxii, 483, 19, 8 p. : col. ill. ; 27 cm. Rev. ed. of : Introduction to information systems in business management. 6th ed. c1991. Business Management O'Brien, James A., EK 12071 12071 0 0 0 658_000000000000000_IRW_1994_A050_OR 0 61188 LBA LBA A050 2017-08-09 658 IRW 1994 A050 Or. A20502 2017-08-09 EK