TY  - BOOK
AU  - Sharma Sanjay. 
TI  - Comminication systems (analog and digital)
SN  - 81-88458-20-1 
U1  - 621.382 
PY  - 2008///
CY  - New delhi
PB  -  Katson Books S K Katariya 
KW  - Engineering
ER  -