“COMPARATIVE STRENGTH OF PARTIALLY REPLACED RICE HUSK ASH WITH CEMENT MORTAR  A CASE STUDY OF OBUBRA L.G.A OF CROSS RIVER STATE: Akwapoly Journal of Communication and Scientific Research (APJOCASR)”, APJOCASR, vol. 7, no. 2, pp. 97–107, Sep. 2024, Accessed: Dec. 22, 2024. [Online]. Available: https://akwapolyjournal.org/index.php/apjocasr/article/view/31