http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nitrogen efficiency in agricultural soils
a Seminar on Nitrogen Efficiency in Agricultural Soils and the Efficient Use of Fertilizer Nitrogen, held in Edinburgh, 16-18 September 1987, as part of the EC Programme for the Coordination of Agricultural Research
Seminar on Nitrogen Efficiency in Agricultural Soils and the Efficient Use of Fertilizer Nitrogen (1987 : Edinburgh, Scotland)
edited by D.S. Jenkinson and K.A. Smith.
"Sponsored by the Commission of the European Communities, Directorate-General for Agriculture, Coordination of Agricultural Research Division."