Adeosun, B. F., and O. Olaofe. “EFFECT OF PART REPLACEMENT OF SILICA SAND WITH CARBON BLACK ON COMPOSITE PROPERTIES: ?Short Communication”. Biological Sciences - PJSIR, vol. 46, no. 4, Aug. 2003, pp. 239-41, https://v2.pjsir.org/index.php/biological-sciences/article/view/1642.