TY  - BOOK
AU  - Gary B Shelly
AU  - Serwalka
TI  - Business Data Communications,Ed4
SN  - 0000072454
U1  - 621.3821 
PY  - 2008///
CY  - New Delhi
PB  - Cengage
KW  -  Communications,Ed4
KW  -  Data
KW  - Business
KW  - Data communication
ER  -