000			00385nam a2200133Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
020			_a981-4035-89-0
100			_aStallings, William
245		0	_aCryptography and network security: principles and practice
250			_a4th
260			_aPrentice hall _bNew Delhi _c2009
300			_a1056p _b325
650			_aCOMPUTER NETWORK
999			_c178802 _d178802