TY  - BOOK
AU  - Sharmma K K
TI  - Fundamentals Of Voice And Data Communication
SN  - 978-93-5014-333-9
U1  - 621.39 SHA 
PY  - 2015///
CY  - New Delhi
PB  - S K Kataria And Sons
KW  - Voice And Data Communication
ER  -