000			00427nam a2200157Ia 4500
008			130318s9999 xx 000 0 und d
020			_a9788131761663
082			_a005.82 STA/C
100			_aStallings, William
245			_aCryptography and network security: Principles and practices
250			_a5
260			_bPearson Education _aNew Delhi _c2011
300			_a743
650			_aCRYPTOGRAPHY
650			_aNETWORK SECURITY
999			_c2254 _d2254