TY  - BOOK
AU  - Cashman, Thomas J., J.T.; (Serwatka, Judy A.), J.T
AU  - Shelly, Gary B.
TI  - Business data communication : Introductory concepts and tech
SN  - 0-7895-4287-0
U1  -  004.6 
PY  - 1998///
CY  - Boston,USA
PB  - International Thomson Publishing
KW  - Computer networks
ER  -