TY  - GEN
AU  - O'Brien, James
TI  - Introduction to information systems
SN  - 0256118841
U1  - 658.05  
PY  - 1994///
CY  - Illinois : 
PB  - Irwin Richard D
KW  - Business - data processing
KW  - Management - data processing
N1  - Includes bibliographical references and index
ER  -