TY  - BOOK
AU  - Stallings,William
TI  - Network security essentials : applications and standards / 
SN  - 9788131716649
U1  - 005.65 
PY  - 2009///
CY  - England : 
PB  - Pearson Education , 
KW  - COMPUTER NETWORK
N1  - Includes index
ER  -