http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
restoration of engravings, drawings, books, and other works on paper
Max Schweidler ; translated, edited, and with an appendix by Roy Perkinson.
Τίτλος πρωτοτύπου: Instandsetzung von Kupferstichen, Zeichnungen, Buchern usw.