TY  - BOOK
AU  - Roddy,Dennis
AU  - Coolen,John
TI  - Electronic communications
SN  - 9788120309845
AV  - TK5101 .R56 1995
U1  - 621.382 20
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning
KW  - Telecommunication
N1  - Includes index
ER  -