http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
10th International Technical Conference : Czech Republic, Veselý Kopec, 18.-20.6.2019
International Technical conference 18.-20.6.2019 : Česká republika, Veselý Kopec. Technological Forum 2019