000			00374nam a22001457a 4500
020			_a9789332518773
082			_a005.8 STA
100			_aWilliam Stallings
245			_aCryptography and network security: principles and practice
250			_a6th ed.
260			_aIndia _bPearson _c2015
300			_a660p. _bill.;
650			_aOperating systems (Computers).
942			_cBK
999			_c13594 _d13594