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01305nam a2200301 a 4500 001 961FEF122AE811DE94715D06A8D7520A 005 200904161942.0 008 890306m19799999cauah b 00100 eng d 020 $a 9780894120398 (pt.1) 020 $a 0894120395 (pt.1) 020 $a 9780894120312 020 $a 089412031X 040 $a ViMcC $c ViMcC $d SILO $d CStRLIN $d CMontNP $d IaU $d SILO 245 0 $a The History of codes and ciphers in the United States during the period between the World Wars / $c edited by Wayne G. Barker. 260 $a Laguna Hills, Calif. : $b Aegean Park Press, $c c1979. 300 $a 2 v. : $b ill., facsims. ; $c 29 cm. 440 0 $a Cryptographic series ; 500 $a Edited versions of v. 3 of Historical background of the Army Security Agency, written in 1946 by the Historical Section of the Army Security Agency. 504 $a Includes bibliographical references and index. 505 0 $a pt.1. 1919-1929 -- pt.2. 1929-1939. 650 0 $a Ciphers $x History. 650 0 $a Cryptography $z United States $x History. 700 1 $a Barker, Wayne G. 710 1 $a United States. $b Historical Section. $b Historical Section. 939 $a 2386769 941 $a 1 952 $l OVUX522 $d 20180111063926.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=961FEF122AE811DE94715D06A8D7520AInitiate Another SILO Locator Search