http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Spate irrigation proceeding of the subregional expert cosultattion on World Development for agriculture in the natural Yemen, Aden, PDR Yemen, 6-10 December, 1987
Food and Agriculture Organization of the United Nations (FAO)
UNDP - Food and Agriculture Organization of the United Nations (FAO)