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Full Citation
Full Citation
- Title Invisible ink and secret writing: first volume on World War 1 secret writing
- Subcollection KV 3: Subject (SF series) Files
- Creation Date 1917-1919
- Declassified Date November 18, 1997
- Classification Level Unclassified
- Language English
- Document Type Government document
- Manuscript Number KV 3/2
- Source Library The National Archives (Kew, United Kingdom)
- Copyright Statement Images reproduced by courtesy of The National Archives, London, England, www.nationalarchives.gov.uk.
- Gale Document Number GALE|BNOTVW005137799
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OCR Confidence:68%