http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
an international framework for evaluating sustainable land management : a discussion paper
Land and Water Development Division, Food and Agriculture Organization of the United Nations
A. J. Smyth, J. Dumanski ; with contributions by G. Spendjian ... [et al.]