TY  - BOOK
AU  - Tittel, Ed 
TI  - Computer networking: schuam's out lines 
SN  - 0-07-049548-3 
U1  - 004.6 TIT  
PY  - 2004///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - COMPUTER NETWORK
ER  -