Before revision: and The National Archives (United Kingdom ), Qatar National Library (Qatar), French National Centre for Scientific Research in Paris, Philadelphia Museum of Art and other institutions.Instytut Fotonowy Micro Fading Tester.
After revision: , The National Archives (United Kingdom ), Qatar National Library (Qatar), French National Centre for Scientific Research in Paris, Philadelphia Museum of Art and other institutions.Instytut Fotonowy Micro Fading Tester.