TY  - BOOK
AU  - Freeman,Roger L.
TI  - Telecommunication transmission handbook / 
SN  - 0471277894
U1  - 621.38 
PY  - 1975///
CY  - New York
PB  - Wiley, 
KW  - Engineering
KW  - Telecommunications
KW  - Computer networks
KW  - Telephone
ER  -