TY  - BOOK
AU  - Viswanathan,Thiagarajan
TI  - Telecommunication switching systems and networks / 
SN  - 9788120307131
U1  - 621.382 23
PY  - 1992///.
CY  - New Delhi : 
PB  - PHI Learning Pvt. Ltd., 
KW  - Telecommunication -- Switching systems.
KW  - Telecommunication systems.
KW  - Electrical, Electronics And Telecommunications Eng -- Engineering And Technology -- Textbook.
ER  -