Wan Ibrahim , M. H. ., Mangi, S. A., Mohd Zuki, S. S. ., Putra Jaya, R., & Supriyatno, D. . (2020). INFLUENCE OF PALM OIL BIOMASS CLINKER AND EMPTY FRUIT BUNCH FIBERS ON CONCRETE PROPERTIES. IIUM Engineering Journal, 21(2), 100–110. https://doi.org/10.31436/iiumej.v21i2.1285