LEADER 01507nam  2200397I  450 
001 9910703745003321
005 20151105093254.0
035   $a(CKB)5470000002434272
035   $a(OCoLC)927616946
035   $a(EXLCZ)995470000002434272
100   $a20151105d2015      uy             0
101 0 $aeng
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 14$aThe SIGABA /ECM II Cipher Machine $e"a beautiful idea" /$fTimothy J. Mucklow
210  1$aFort George G. Meade, MD :$cNational Security Agency, Center for Cryptologic History,$d2015.
215   $a1 online resource ( 44 pages) $cillustrations
300   $a"This publication is distributed free by the National Security Agency."
300   $aTitle from title screen (viewed June 25, 2015).
320   $aIncludes bibliographical references (pages 38-44).
517   $aSIGABA /ECM II Cipher Machine 
606   $aSIGABA cipher system$xHistory
606   $aWorld War, 1939-1945$xCryptography
606   $aCryptography$xHistory$y20th century
615  0$aSIGABA cipher system$xHistory.
615  0$aWorld War, 1939-1945$xCryptography.
615  0$aCryptography$xHistory
700   $aMucklow$b Timothy J$g(Timothy Jones),$01394405
712 02$aUnited States.$bNational Security Agency/Central Security Service.$bCenter for Cryptologic History,
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910703745003321
996   $aThe SIGABA$93451711
997   $aUNINA