TY  - BOOK
AU  - Singh, Brijendra 
TI  - Data communications and computer networks 
SN  - 978-81-203-2969-0 
U1  - 005.71 SIN  
PY  - 2007///
CY  - Prentice hall of india private Ltd. 
PB  - New Delhi 
KW  - DATA COMMUNICATION
ER  -