Clifton, H. D. 1927- Business data systems : a practical guide to systems analysis and data processing / H.D. Clifton. - 4th ed. - New York : Prentice Hall, 1990. - xiv, 457 p. : ill. (some col.) ; 24 cm. ISBN: 0130916951 : $22.95 $22.95 LCCN: 89028502 LC Class. No.: HF5548.2 .C5427 1990 / .C5427 1990 Dewey Class. No.: 658/.05