TY  - GEN
AU  - Roddy, Dennis15135
AU  - Coolen, John15134
TI  - Electronic communications/4th ed
SN  - 8120309847
PY  - 2013///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - 621.39
KW  - Telecommunication15133
ER  -