http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Denmark. Institute of Water and Environment (DHI)
Institute for Systems, Infornatics and Safety
Ελληνικό Κέντρο Βιοτόπων-Υγροτόπων (ΕΚΒΥ)