http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Guidelines for quality management in soil and plant laboratories
International Soil Reference and Information Centre
Food and Agriculture Organization of the United Nations
compiled by L.P. van Reeuwijk with a contribution by V.J.G. Houba.
"International Soil Reference and Information Centre."
Includes bibliographical references (pages 135-137) and index.