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Dyfyniad Arddull ChicagoFAO. Drought-resistant Soils: Optimization of Soil Moisture for Sustainable Plant Production : Proceedings of the Electronic Conference Organized By the FAO Land and Water Development Division. Rome, Italy: FAO, 2005.
Dyfyniad MLAFAO. Drought-resistant Soils: Optimization of Soil Moisture for Sustainable Plant Production : Proceedings of the Electronic Conference Organized By the FAO Land and Water Development Division. Rome, Italy: FAO, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.