TY  - BOOK
AU  - "Viswanathan, Thiagarajan"
ED  - Manav Bhatnagar
TI  - Telecommunication switching systems and networks
SN  - 9788120350830
U1  - 621.382 
PY  - 2015///
CY  - New Delhi
PB  - PHI learing
KW  - Electrical Engineering
ER  -