00309nam a2200121Ia 4500003000400000008004100004020001400045040000800059100002100067245005100088260003900139300000900178LDD181029s9999    xx            000 0 und d  a850123402  cLDD  aWood, Michael B. 0aIntroducing computer securitycMichael B. Wood  aManchesterbNCC Publicationsc1982  a131p