TY  - BOOK
AU  - Roddy, Dennis 
AU  - Coolen, Jonh
ED  - 4th.ed.
TI  - Electronic communications 
SN  - 9788177585582
U1  - 621.38 
PY  - 2011///
CY  - Delhi
PB  - Pearson
KW  - Physics
KW  - Applied Physics
KW  - Engineering
KW  - Electronics and commutation
ER  -