1. Soil-phosphorus extraction methodologies: A review;Abdu;Afr. J. Agric. Res.,2006
2. Assessment of the severity of acid saturations on soils collected from cultivated lands of East Wollega Zone, Ethiopia;Achalu;Sci. Technol. Arts Res.,2014
3. Phosphorus desorption patterns of soils from different land use systems of East Wollega, Ethiopia;Achalu;Middle East J. Sci. Res.,2013
4. CuO and CeO2 catalysts supported on Al2O3, ZrO2, and SiO2 in the oxidation of CO at low temperature;Aguila;Appl. Catal. A,2008
5. Tropical Soil Biology and Fertility: A Handbook of Methods;Anderson,1996