000			00330nam a2200121Ia 4500
008			221007s9999 xx 000 0 und d
100			_aStallings William
245		0	_aCryptography & Network Security
250			_a5th
260			_aPearson Education, New Delhi _bPearson Education, New Delhi _c2011
300			_a744
942			_cBK
999			_c2389 _d2389