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Gels Cleaning Research (1998–2003) Here, a gel is applied to a marble section. The sample lines are marked on the cleaning surface to guide gel application. Photo: Valerie Dorge. |
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Gels Cleaning Research (1998–2003) Here, a gel is applied to a marble section. The sample lines are marked on the cleaning surface to guide gel application. Photo: Valerie Dorge. |
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