TY  - BOOK
AU  - Blake, Roy
TI  - Electronic communication systems
SN  - 9788131503072
SN  - 200272838
U1  - 621.382 BLA 
PY  - 2010///
CY  - Albany, N.Y
PB  - Cengage Learning
KW  - Telecommunication
N1  - Includes index
ER  -