TY  - BOOK
AU  - Dang, Luan; Jennings, Cullen & Kelly, David
TI  - Practical voip using vocal
SN  - 81-7366-439-0
U1  - 621.38212 Dan 
PY  - 2002///
CY  - Shroff Publishers & Distributors Pvt. Ltd., Mumbai
ER  -