000 00305nam a2200121Ia 4500
008 250409s9999 xx 000 0 und d
020 _a007-059362-0
082 _a5.422
_bVER
100 _aVerma, Archna
245 0 _aUnix and shell progrming
260 _aVidhyanagar
_bFire wall
_c2000
365 _a750/-
999 _c253545
_d253545