(1)
Girma Woldetsadik; Sombat Chinawong. Growth, Yield Attributes, Yields, and Weed Characteristics as Influenced by Integrated Nitrogen Fertilization and Weed-Control Measures of Maize (Zea mays L.) in Central Rift Valley of Ethiopia. Agr. Nat. Resour. 2005, 39, 338-349.