TY  - BOOK
AU  - VISWANATHAN, THIAGARAJAN
TI  - TELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS 
SN  - 81-203-0713-5
U1  - 621.382 O 04 VIS 
PY  - 2004///
CY  - NEW DELHI
PB  - PRENTICE HALL OF INDIA PVT. LTD.
ER  -