000			00464nam a2200181Ia 4500
008			201023s9999||||xx |||||||||||||| ||und||
020			_a000000-0000000
100			_aSehgal,Umesh.
245		0	_aNetwork security and cryptography.
250			_a1st
260			_aNew Delhi _bS.K.Kataria _c2009
300			_a342
365			_b175
650			_aComputer Science.
942			_cTB
999			_c2625 _d2625