http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Physiology and determination of crop yield
"Based on the proceedings of an international symposium sponsored by ASA [and others] and held at the University of Florida, Gainesville, Florida, 10-14 June 1991."
Includes bibliographical references and index.