TY  - BOOK
AU  - Carlson, A. Bruce
AU  - Crilly, Payl B.
TI  - Communication systems : : an introduction to signals and noise in electrical communication 
SN  - 13:978-007-126332-0
AV  - 621.38223 C19c 
PY  - 2010///
CY  - Boston
PB  - McGraw-Hill
N1  - Includes index
ER  -