00246nam a2200097Ia 4500008004100000020001500041050002400056100002600080245003300106260000900139230416s9999||||xx |||||||||||||| ||und||  a047162604X  aQA76.9.A25 V35 1989  aVallabhaneni, S. Rao. 0aAuditing computer security :  c1989