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Letters and papers 1870-1874
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John James Cam, The Shambles, Worcester to G[eorge] Jones. Tells of a system he has patented of treating sewage and converting it to manure. (News cutting enclosed).
John James Cam, The Shambles, Worcester to G[eorge] Jones. Tells of a system he has patented of treating sewage and converting it to manure. (News cutting enclosed).
DR18/17/59/52
27 July 1871
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