TY  - BOOK
AU  - Viswanathan, T.
TI  - Telecommunication Switching System & N/W
SN  - 9788120307131
U1  - 621.382 
PY  - 2012///
CY  - New Delhi
PB  - PHI
KW  - Telecommunication N/W
KW  - Electronic Communication Engineering
ER  -