TY  - BOOK
AU  - Clark,M.P.
TI  - Networks and telecommunications: design and operation 
SN  - 0471973467
U1  - 621.382 
PY  - 1997///
CY  - Chichester, England
PB  - John Wiley
KW  - Computer networks
KW  - Data transmission systems
KW  - Telecommunication systems
ER  -