TY  - BOOK
AU  - Stanley, William, D and Jeffords, John, M 
TI  - Electronic communications principles and systems 
SN  - 978-81-315-0354-6 
U1  - 621.382 STA  
PY  - 2008///
CY  - Delmark/Cengage learning 
PB  - Austrelia 
KW  - COMMUNICATION SYSTEM
ER  -