TY  - BOOK
AU  - Held,Gilbert
TI  - Data communications networking devices: operation, utilization and LAN and WAN internetworking 
SN  - 047197515X
AV  - TK5105.5  .H44 1999
PY  - 1999///
CY  - Chichester
PB  - John Wiley
KW  - Computer networks
KW  - Data transmission systems
ER  -