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