TY  - BOOK
AU  - Stallings, William
TI  - Network security essentials: Applications and standards
U1  - 005.8 S18N(6) 
PY  - 2019///
CY  - Noida
PB  - Pearson Education
N1  - 3371 20/12/2018 APD19/1089650 22/01/2019 Main Budget
ER  -