01539oam 2200397 a 450 991069743500332120090218090239.0(CKB)5470000002388594(OCoLC)174040861(EXLCZ)99547000000238859420071011d2007 ua 0engurcn||||a||||txtrdacontentcrdamediacrrdacarrierMarking classified national security information[electronic resource] as required by Executive Order 12958, as amended, Classified National Security Information, March 25, 2003 and ISOO implementing directive no. 1, effective September 22, 2003Washington, D.C. :Information Security Oversight Office,[2007]30 pages digital, PDF fileTitle from title screen (viewed on Feb. 18, 2009)."The May 2005 version is still usable"--P. [1]."October 2007."Marking classified national security information Security classification (Government documents)United StatesNational securityUnited StatesSecurity classification (Government documents)National securityUnited States.Information Security Oversight Office.DOJDOJOCLCQGPOBOOK9910697435003321Marking classified national security information3458352UNINA