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Magnesian Limestone Project (2004–2009) Giacomo Chiari (GCI) and Bill Martin (English Heritage) discussing the conservation of stone carvings at Howden Minster. Photo: Eric Doehne |
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Magnesian Limestone Project (2004–2009) Giacomo Chiari (GCI) and Bill Martin (English Heritage) discussing the conservation of stone carvings at Howden Minster. Photo: Eric Doehne |
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