TY  - GEN
AU  - Held , Gilbert
TI  - Understanding data communications
SN  - 8176353191
U1  - 004.6 
PY  - 1999///
CY  - New Delhi
PB  - Techmedia
KW  - DATA COMMUNICATIONS
KW  - COMPUTER SCIENCE
KW  - NETWORKING
KW  - COMPUTER COMMUNICATIONS
ER  -