TY  - BOOK
AU  - Freeman,Roger L.
TI  - Practical data communications
T2  - (Wiley series in telecommmunications and signal procssing)
SN  - 0471393029 
U1  - 004.6 
PY  - 1995///, 2001
CY  - New York
PB  - John Wiley
KW  - SISTEMAS DE TRANSMISION DE DATOS
ER  -