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ANIMAL SKIN AND SKIN PRODUCTS
PAPYRUS PARCHMENT AND PAPER
PRINTS DRAWINGS AND MANUSCRIPTS
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acetate action adhesive alkaline alloys appearance applied atmosphere attack bleaching blotting-paper brittle bronze brush canvas carbon cause caustic soda cent chemical chloramine-T chloride clay cleaning colour condition containing copper corrosion cracks cuprite damage damp deterioration dilute dissolved distilled water dried effective electrolyte excavated exposed fibres film formic acid glass gold heat hydrogen peroxide immersion impregnation incrustation inlays insecticide insects iron ivory laboratory lacquer leather marble material metal method moisture mould mount museum necessary nitric acid nitrocellulose object ornament oxide paint layer panel paper parchment patina plaster polished Polythene polyvinyl acetate porous possible powder present preservation protection reagent reduction relative humidity removed repair resin restoration result Rochelle salt rubbing rust salts sheet silver skin sodium soft softened soluble solution solvent specimen stain stone sulphuric acid surface Sutton Hoo temperature textiles thin thymol timber tion tissue treatment varnish washing wood