TY  - BOOK
AU  - Carlson, A Bruce
AU  - Crilly,Paul B.
AU  - Rotledge,, Janet C
TI  - Communication systems: an introduction to signals and noise in electrical communication / 
SN  - 0-07-121028-8
U1  - 621.382 23 
PY  - 2002///
CY  - New York
PB  - Mc Graw Hill
KW  - Engineering
KW  - Communication-Engineering
N1  - Includes index
ER  -