TY  - BOOK
AU  - Stallings,William
TI  - Network security essentials: applications and standards 
SN  - 0137067925
PY  - 2011///
CY  - Boston [etc.]
PB  - Pearson Education
KW  - Sieci komputerowe
KW  - Årodki zabezpieczajÄce
KW  - kaba
N1  - Na okÅ.: International edition; Indeks
ER  -