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D 1. 79/ 4 : 021/Ver. 1
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[Fort Meade, Md.?] : National Computer Security Center ; [Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., 1991]
1991
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[Fort Meade, Md.?] : National Computer Security Center ; [Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., 1991]
1991
Rating:
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