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010   $a1-5081-7311-7
035   $a(OCoLC)968088306
035   $a(MiFhGG)GVRL07YI
035   $a(EXLCZ)993710000001010127
100   $a20160708h20172017  uy             0
101 0 $aeng
135   $aurun|---uuuua
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aUncracked codes and cyphers /$fAnn Byers
205   $aFirst edition.
210  1$aNew York :$cRosen Publishing,$d2017.
210  4$d?2017
215   $a1 online resource (64 pages) $ccolor illustrations
225 1 $aCryptography : code making and code breaking
311   $a1-5081-7310-9 
320   $aIncludes bibliographical references and index.
327   $aAncient codes : the Phaistos Disc and the Voynich manuscript -- Buried treasure : the Beale papers -- A playful composition : the Dorabella cipher -- Two challenge ciphers -- A killer's ciphers : the Zodiac -- Challenging the experts : the Kryptos monument.
330   $aIn this book, readers examine eight codes and ciphers that could not be cracked, including the ancient Phaistos Disc, the Voynich Manuscript, the location of the buried treasure of 1819 as described in the Beale Papers, Edward Elgar's Dorabella Cipher of 1897, the Chaocipher of 1918, the D'Agapeyeff Challenge Cipher of 1939, the Zodiac Killer's 408 Cipher from the late 1960s, and the Kryptos Monument ciphers of 1990.
410  0$aCryptography: code making and code breaking.
606   $aCryptography$xHistory
606   $aCiphers$xHistory
615  0$aCryptography$xHistory.
615  0$aCiphers$xHistory.
676   $a005.8/2
700   $aByers$b Ann$01247580
801  0$bMiFhGG
801  1$bMiFhGG
906   $aBOOK
912   $a9910158635803321
996   $aUncracked codes and cyphers$92894802
997   $aUNINA