000 00285nam a2200109Ia 4500
008 160523s9999 xx 000 0 und d
020 _a81-7635-555-0
100 _aWhite, G. B. [et al.]
245 _aVoice and data security
260 _aNew Delhi
_bTechmedia
_c2001
300 _axv, 484p.
999 _c25757
_d25757