TY  - BOOK
AU  - KATIYAR
TI  - TELECOMMUNICATION SWITCHING SYSTEMS
T2  - P10364
SN  - 9789350142424
U1  -  621.38 KAT 
PY  - 2014///
CY  - India
PB  - KATSON
KW  - Electronics and Communication Engineering
N1  - ESWAR
ER  -