Aishah Ramadan Mohamed, Mohamed Ali Elssaidi 2019. Fractionation of Organic and Inorganic Phosphorus in Sandy Soils irrigated by Treated Wastewater Cultivated by Hordeum vulgre & Vicia faba . Journal of Pure & Applied Sciences . 18, 4 (Nov. 2019). DOI:https://doi.org/10.51984/jopas.v18i4.393.