TY  - BOOK
AU  - Roddy, Dennis. 
TI  - Electronic communications. 
SN  - 9788177585582
U1  - 621.38  ROD
PY  - 2013///.
CY  - Noida :  
PB  - Pearson, Always Learning, 
KW  - Telecommunication.
KW  - Communication.
ER  -