TY  - BOOK
AU  - Halsall, Fred & Kulkarni, Lingana Gouda
TI  - Computer networking and the internet .-5th ed .-978-81-775-8475-2
SN  - 978-81-775-8475-2
U1  - 001.64404 Hal/Kul 
PY  - 2007///
CY  - Pearson education, New Delhi
ER  -