Gregory, Robert Henry
Business data processing and programming
Chatto and Windus, 1963
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Orilia, Lawrence S.
Introduction to business data processing
McGraw-Hill, 1982
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Alagar, Vangalur S.
Fundamentals of computing: theory and practice
Prentice-Hall, 1989
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Clifton, H.D.
Data processing systems design: case studies from the application of computers to business
Auerbach, 1971
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Orilia, Lawrence
Business data processing systems
John Wiley & Sons, 1972
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