<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">gum bichromate process</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31409992</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:50:14</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">gum bichromate printing process</dcterms:alternative> <dcterms:alternative xml:lang="en">gum dichromate</dcterms:alternative> <dcterms:alternative xml:lang="en">gum printing</dcterms:alternative> <dcterms:alternative xml:lang="en">gum process</dcterms:alternative> <dcterms:alternative xml:lang="en">gum-bichromate</dcterms:alternative> <dcterms:alternative xml:lang="en">gum-bichromate process</dcterms:alternative> <dcterms:alternative xml:lang="en">gum-pigment process</dcterms:alternative> <dcterms:alternative xml:lang="en">printing, gum</dcterms:alternative> <dcterms:alternative xml:lang="en">bi-gum</dcterms:alternative> <dcterms:alternative xml:lang="en">bi-gum process</dcterms:alternative> <dcterms:alternative xml:lang="en">bichromate, gum</dcterms:alternative> <dcterms:alternative xml:lang="en">gum bichromate</dcterms:alternative> <dcterms:alternative xml:lang="en">gum bichromate method</dcterms:alternative> <dcterms:alternative xml:lang="en">gum bichromate printing</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ A process to make photographic prints using a colloid emulsion of bichromated gum arabic as the binder and pigment as the final image material. The image is formed as the emulsion hardens in relation to exposure and is developed by washing away the unhardened emulsion to reveal the support, forming the highlights and midtones. ]]></dc:description></metadata>