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[null,"1.","Record Nr.",null,"UNINA9910707775003321"]
[null,null,"Autore",null,"Friedman William F (William Frederick), <1891-1969, >"]
[null,null,"Titolo",null,"Military cryptanalysis / / by William F. Friedman"]
[null,null,"Pubbl/distr/stampa",null,"Washington : , : United States Government Printing Office, , 1939-1941"]
[null,null,"Descrizione fisica",null,"1 online resource (4 volumes) : illustrations"]
[null,null,"Soggetti",null,"Ciphers"]
[{"$nulls":4},"Cryptography"]
[{"$nulls":4},"World War, 1939-1945 - Military intelligence - United States"]
[{"$nulls":4},"World War, 1939-1945 - Cryptography"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","At head of title: War Department. Office of the Chief Signal Officer, Washington."]
[{"$nulls":4},"\"Prepared under the direction of the Chief Signal Officer.\""]
[{"$nulls":4},"\"Declassified and approved for release by NSA on 09-19-2005 pursuant to E.O. 12958, as amended.\""]
[{"$nulls":4},"Formerly restricted."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and indexes."]