Computer information systems : an introduction to data processing / Gerald M. Weinberg, Dennis P. Geller. Weinberg, Gerald M. Geller, Dennis P., 1947- Electronic data processing. QA76 .W437 1985 001.64 19 WEC Includes index. Bibliography: p. 644-646. Boston : Little, Brown, c1985. c1985. 1985 Text xxv, 657 p. : eng Little, Brown computer systems series