TY  - BOOK
AU  - Viswanathan,Thiagarajan
TI  - Telecommunication switching systems and networks
SN  - 9788120307131
U1  - 621.38 23
PY  - 1992///
CY  - New Delhi
PB  - PHI Learning
KW  - Telecommunication
N1  - Includes index.
ER  -