TY  - BOOK
AU  - Viswanathan, Thiagarajan
TI  - Telecommunication switching systems and networks 
SN  - 81-203-0713-5
U1  - 621.382 
PY  - 0000///99
CY  - New Delhi
PB  - Prentice Hall
KW  - Engineering
KW  - Electrical engineering
N1  - Includes index
ER  -