http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Unification of European forest pattern research
proceedings of a workshop organized by the Forest Ecosystem Research Network (FERN) of the European Science Foundation (ESF), held in Strasbourg, France, 24-26 April 1989
P. Schmidt, R.A.A. Oldeman, A. Teller, editors.