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181   $ctxt$2rdacontent
182   $cc$2rdamedia
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200 00$aMarking classified national security information$b[electronic resource] $eas required by Executive Order 12958, as amended, Classified National Security Information, March 25, 2003 and ISOO implementing directive no. 1, effective September 22, 2003
210  1$aWashington, D.C. :$cInformation Security Oversight Office,$d[2007]
215   $a30 pages $cdigital, PDF file
300   $aTitle from title screen (viewed on Feb. 18, 2009).
300   $a"The May 2005 version is still usable"--P. [1].
300   $a"October 2007."
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801  2$bOCLCQ
801  2$bGPO
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