The hidden warHaldane, Robert A.creatortextbibliographynyuNew YorkSt. Martin's Press1978monographiceng224 pages, 4 unnumbered leaves of plates : illustrations ; 23 cmR.A. Haldane.Includes bibliographical references (pages 198-202) and index.
fast
(OCoLC)fst01180924
https://id.oclc.org/worldcat/entity/E39Qhp4vBbhpRH9XvjbDFXtxhb
1939-1945
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World War, 1939-1945CryptographyWorld War, 1939-1945Secret serviceGuerre mondiale, 1939-1945CryptographieGuerre mondiale, 1939-1945Service secretCryptographySecret serviceWorld War 2Military cryptologyD810.C88 H11031237197797803123719750709164866978070916486977012279DLC77083020241029143118.0ocm03275612 eng