http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Potentials and limitations of biological nitrogen fixation studies in East Africa
Biological nitrogen fixation studies in East Africa
Cover title: Biological nitrogen fixation studies in East Africa, potentials and limitations.
Inaugural lecture series (University of Dar es Salaam) ; no. 18