TY  - BOOK
AU  - Edwards, Chris
AU  - Ward, John Bytheway, Andy 
TI  - The essence of information systems
U1  - 658.4038011 EDW  
PY  - 1995///
CY  - New Delhi
PB  - Prentice-Hall of India Pvt Ltd
N1  - Includes bibliographical references and index 
ER  -