TY  - BOOK
AU  - Kennedy,George, Davis, Bernard.
AU  - x
TI  - Electronic communication systems: x
SN  - 0074636820 
U1  - 621.38415/K35e 
PY  - 1999///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Telecommunication
ER  -