TY  - BOOK
AU  - Roddy,Dennis
AU  - Coolen,John
TI  - Electronic communications
SN  - 8131705110
AV  - TK5101 .R56 1995
U1  - 621.382 
PY  - 1995///
CY  - New Delhi
PB  - Pearson Education/Prentice-Hall
KW  - Telecommunication
ER  -