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Magnesian Limestone Project (2004–2009) Sarah Pinchin (English Heritage) acquiring a polynomial texture map (PTM) image of the deteriorating stone surface. Photo: Eric Doehne |
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Magnesian Limestone Project (2004–2009) Sarah Pinchin (English Heritage) acquiring a polynomial texture map (PTM) image of the deteriorating stone surface. Photo: Eric Doehne |
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