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* secrets and spies *
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* Extract from ‘Cryptographia, or The Art of Decyphering’, c.1811 *
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* (Catalogue reference: WO 37/9) *
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Catalogue reference: WO 37/9; extract from Cryptographia, c.1811
Catalogue reference: WO 37/9; extract from Cryptographia, c.1811
Catalogue reference: WO 37/9; extract from Cryptographia, c.1811
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