TY  - BOOK
AU  - Essick, Edward L.
TI  - Principles of business data processing
U1  - 004 21st ed.
PY  - 1986///
CY  - Chicago
PB  - Science Research Associates
KW  - Business-Data processing
KW  - Compute generations
KW  - Computer Input-output
KW  - Computer system
ER  -