TY  - BOOK
AU  - Halsall, Fred
TI  - Data communications, computer networks and open systems
SN  - 81-7808-098-2
U1  - 004.6 HAL 
PY  - 2000///
CY  - INDIA
PB  - ADDISON WESLEY
KW  - DATA COMMUNICATIONS COMPUTER NETWORKS
ER  -