TY  - BOOK
AU  - Viswanathan, Thiagarajan.
TI  - Telecommunications switching systems and networks
SN  - 9788120307131
U1  - 621.381537  VIS;22 
PY  - 1992///
CY  - New Delhi
PB  - PHI
KW  - Telecommunications,switching,networks
ER  -