TY  - BOOK
AU  - Gupta, Prakash, C 
TI  - Data communication 
SN  - 81-203-1118-3 
U1  - 005.71 GUP  
PY  - 2002///
CY  - Prentice hall of india 
PB  - New Delhi 
KW  - DATA COMMUNICATION
ER  -