Media type: E-Article Title: Discoloration of Green Copper Pigments in Manuscripts and Works of Graphic Art Contributor: BANIK, GERHARD imprint: Walter de Gruyter GmbH, 1989 Published in: Restaurator Language: Not determined DOI: 10.1515/rest.1989.10.2.61 ISSN: 0034-5806; 1865-8431 Keywords: General Materials Science ; Media Technology ; Conservation Origination: Footnote: