000
00285nam a2200109Ia 4500
008
160523s9999 xx 000 0 und d
020
_a
81-7635-555-0
100
_a
White, G. B. [et al.]
245
_a
Voice and data security
260
_a
New Delhi
_b
Techmedia
_c
2001
300
_a
xv, 484p.
999
_c
25757
_d
25757