000			00423nam a2200157Ia 4500
008			180712s9999 xx 000 0 und d
020			_a9788131761663
082			_a5.8 _bSTA
100			_aSTALLINGS, William
245			_aCryptograpgy and network security : principles and practice
250			_a5th ed.
260			_aNew Delhi _bPearson Education _c2011
300			_a741 p.
650			_aNetwork security
942			_cS
999			_c10733 _d10733