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020			_qHB.
040			_cAin Uddin
082			_a005.8 _bNES
100			_aBrein. O' Nessa. _9129910
245			_aComputer Security and Cryptography / _cNessa O'Brein.
260			_b Larsen and Keller Education, _c2023.
300			_a256 P. ;
942			_2ddc _cBK
999			_c614413 _d614413