TY  - BOOK
AU  - Roddy, Dennis
AU  - Coolen, John
TI  - Electronic communications
SN  - 9788129701060
U1  - 621.82 
PY  - 2004///
CY  - Delhi
PB  - Pearson Education Pvt. LTD
KW  - Electronic
KW  - communications
ER  -