An introduction to data processing for business / Robert J. Thierauf, John F. Niehaus ; with the assistance of Verale Phillips. Thierauf, Robert J. Niehaus, John F. Business Data processing. HF5548.2 .T443 651.26 THI Includes index. New York : Wiley, c1980. c1980. 1980 Text xi, 366 p. : eng