TY  - BOOK
AU  - Viswanathan,Thiagarajan, x
AU  - x
TI  - Telecommunication switching systems and network: x
SN  - 8120307135
U1  - 621.38/V822t 
PY  - 2001///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - Telecommuni cations
KW  - Informations networks
N1  - Includes
ER  -