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Christopher Ehizemhen Igibah, Olugbenga Oludolapo Amu, Lucia Omolayo Agashua & Ernest Tochukwu Ugochukwu 2022. Improving the Soil Properties by Adding Rice Husk Ash (RHA) and Ordinary Portland Cement (OPC): An Experimental Analysis. Archives of Current Research International. 22, 4 (May 2022), 1–9. DOI:https://doi.org/10.9734/acri/2022/v22i430281.