TY  - BOOK
AU  - Haag,Stephen
AU  - Cummings,Maeve
TI  - Information systems essentials
SN  - 0073105813
AV  - HF5548.5 .H11 2006
PY  - 2006///
CY  - Boston 
PB  - McGraw-Hill
N1  - Includes bibliographical references and index
ER  -