TY  - BOOK
AU  - Viswanathan, Thiagarajan
AU  - Bhatnagar, Manav
TI  - Telecommunication switching systems and networks
SN  - 9788120350830
U1  - 621.382 
PY  - 2015///
CY  - Delhi
PB  - PHI Learning
N1  - Includes index
ER  -