Gleim, George A.
Electronic data processing systems and procedures
Prentice-Hall, 1971
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Orilia, Lawrence
Business data processing systems
John Wiley & Sons, 1972
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Gregory, Robert Henry
Automatic data-processing systems : principles and procedures
Wadsworth, 1960
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McLeod, Raymond
Computerized business information systems: an introduction to data processing
John Wiley & Sons, 1982
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Orilia, Lawrence
Student workbook for business data processing systems
John Wiley & Sons, 1972
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