000			00475 a2200193 4500
003			ISURa
008			150206b xxu||||| |||| 00| 0 eng d
020			_a1855542013
041			_aEnglish
082			_a005.4476 _bDEV
100			_aDevargas , Mario
245			_aNetwork security
260			_c1993 _aEngland _bNCC Blackwell
300			_bill. _c24 cm. _a152 p.
650			_aOPERATING SYSTEMS
650			_aCOMPUTER SCIENCE
650			_aNETWORKING
942			_cLN _2ddc
999			_c40207 _d41754