000
00311nam a2200121Ia 4500
008
190812s9999 xx 000 0 und d
020
_a
9789332585225
100
_a
"Stallings, william"
245
0
_a
Cryptography & Network Security: Principles And pratice
260
_b
Pearson In
365
_b
709
942
_c
BK
999
_c
5744
_d
5744