bn:03498328n
Noun Named Entity
Categories: 1919 disestablishments in the United Kingdom, United Kingdom in World War I, 1914 establishments in the United Kingdom, Individual rooms, Military units and formations of the Royal Navy in World War I
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Room 40  ID25  NID25
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Room 40, also known as 40 O.B., was the cryptanalysis section of the British Admiralty during the First World War. Wikipedia
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Room 40, also known as 40 O.B., was the cryptanalysis section of the British Admiralty during the First World War. Wikipedia
Cryptanalysis department Wikidata
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Wikipedia
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