TY  - BOOK
AU  - Jeevakumari, Amutha, S. A 
TI  - Elements of data communication and networks 
SN  - 978-81-318-0462-9 
U1  - 005.71JEE  
PY  - 2008///
CY  - University science press 
PB  - New Delhi 
KW  - DATA COMMUNICATION
ER  -