TY  - BOOK
AU  - Held,Gilbert
TI  - Data communications networking devices: operation, utilization, and LAN and WAN internetworking 
SN  - 047197515X
PY  - 1999///
CY  - New York
PB  - Wiley
KW  - Computer networks
KW  - Equipment and supplies
KW  - Data transmission systems
N1  - Includes index
ER  -