TY  - BOOK
AU  - Forouzan, Behrouz A
AU  - Coombs, Catherine
AU  - Fegan, Sophia Chung
TI  - Data communications and networking
SN  - 0-07-043563-4.
U1  - 004.66 
PY  - 2002///
CY  - New Delhi
PB  - Tata McGraw Hill
ER  -