blue stainhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31301948enGetty Institute2026-03-30 20:21:10http://AATesaurus.cultura.gencat.cat/aat/getty_enTesaurus d'Art i Arquitecturatext/html blue rot blue sap stain blue-stain stain, blue stain, blue sap