TY  - BOOK
AU  - Viswanathan, Thiagarajan 
AU  - Bhatnagar, Manav 
TI  - Telecommunication switching systems and networks
SN  - 9788120350830
U1  - 621.382 
PY  - 2015///
PB  - PHI learning private limited Delhi -92 ; 
KW  - Electronics
ER  -