TY  - BOOK
AU  - Forouzan, Behrouz A
AU  - Fegan, Sophia Chung.
TI  - Data communications and net working 
SN  - 0070634149 
U1  - 004.6 
PY  - 1994///
CY  - New Delhi
PB  - Tata Mcgraw Hill
KW  - Data processing computer science
ER  -