TY  - BOOK
AU  - Black, Uyless D
TI  - Data Communications and Distributed Networks
U1  - 004.6 
PY  - 1997///
CY  - New Delhi
PB  - Prentice -Hall Inc.
KW  - General stack
KW  - Computer networks
KW  - Data transmission systems
KW  - Electronic data processing--Distributed processingComputer
ER  -