TY  - BOOK
AU  - O'Brien,James A.
TI  - Introduction to information systems
SN  - 0072890428
AV  - HF5548.2 .Ob6 2005
PY  - 2005///
CY  - Boston 
PB  - McGraw-Hill/Irwin
N1  - Includes bibliographical references and index
ER  -