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999			_c24775 _d24775
005			20230413121732.0
008			230413b xxu||||| |||| 00| 0 eng d
100			_aKAUFMAN Charlie and others
245			_aNETWORK SECURITY
250			_a2
260			_bPEARSON _c2017
300			_a638
942			_2ddc _cBK