TY  - BOOK
AU  - Katiyar, Sapna
TI  - Telecommunication Switching Systemss
SN  - 9789350142424
U1  - 621.382 
PY  - 2012///
CY  - New Delhi
PB  - Kataria Publication
KW  - Telecommunication N/W
KW  - Electronic Communication Engineering
ER  -