TY  - BOOK
AU  - Comer,Douglas E.
TI  - Computer networks and internets 
SN  - 8129703300 (paperback)
PY  - 2001///
CY  - London
PB  - Prentice Hall
UR  - http://www.amazon.com/exec/obidos/ASIN/8129703300/chopaconline-20
ER  -