TY  - BOOK
AU  -  Forouzan,Behrouz A.
TI  - Data communications and networking / 
U1  - 004.6 
PY  - 2004///
CY  - New Delhi : 
PB  - Tata McGraw-Hill Publishing , 
KW  - DATA COMMUNICATION
N1  - Includes bibliographical  references and index
ER  -