http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
γενική επιμέλεια: Δημήτρης Γ. Παπανίκας.
Τίτλος πρωτοτύπου: How it works: the A to Z of invention, science and technology with thousands of fascinating diagrams and photographs.