Ubi, S.E, P.O Nkra, R.B Agbor, D.E Ewa, and M. Nuchal. 2020. “EFFICACY OF BASALT AND GRANITE AS COARSE AGGREGATE IN CONCRETE MIXTURE”. International Journal of Engineering Technologies and Management Research 7 (9):1-9. https://doi.org/10.29121/ijetmr.v7.i9.2020.769.