http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
tools for learning about, promoting and protecting the natural heritage of Europe : proceedings of the seminar organised by the Council of Europe in collaboration with the International Council of Museums, Strasbourg, 27-29 September 1989
French edition: Les musees de la nature: outils pour la connaissance, la valorisation et la preservation du patrimoine naturel europeen