TY  - BOOK
AU  - Roddy, Dennis
AU  - Coolen, John.
TI  - Electronic communications
SN  - 9788120309845
U1  - 621.38 ROD-D 
PY  - 1995///
CY  - India
PB  - Prentice Hall of India
KW  - Telecommunications, electronics
ER  -