TY  - BOOK
AU  - HALSALL, Fred.
TI  - Data Communications, Computer Networks and Open Systems
SN  - 81-7808-098-2
U1  - 4.6 
PY  - 2002///
CY  - Singapore
PB  - Pearson Education
KW  - Data
KW  - Communication
KW  - Network
ER  -