TY  - BOOK
AU  - Shelly, Gary B,
AU  - CASHMAN,THOMAS.J
AU  - SERWATKA,JUDY,A
TI  - Business Data Communications: Introductory Concepts and Techniques
SN  - 8120316916
U1  - 004.6 SHE 
PY  - 2007///
CY  - New Delhi
PB  - Thomson
N1  - Computer networks
ER  -