TY  - BOOK
AU  - Shelly , Gary. B ,Cashman , Thomas.J ,Serwatka , Judy. A
TI  - Business data communications ,introductory concepts and techniques
SN  - 0-7895-5958-7
U1  - 004.6 SHE 
PY  - 2001///
CY  - USA
PB  - THOMAS LEARNING
KW  - BUSINESS-DATA PROCESSING. BUSINESS- COMMUNICATIONS SYSTEM LOCAL AREA NETWORK.DATA TRANSMISSION SYSTEMS
ER  -