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Abdullah, M. E., N. H. M. Kamaruddin, B. D. Daniel, N. A. Hassan, M. R. Hainin, S. A. A. Tajudin, A. Madun, and R. Mapanggi. Stiffness Modulus Properties of Hot Mix Asphalt Containing Waste Engine Oil. Asian Research Publishing Network, 2016.

Abdullah, M. E., et al. Stiffness Modulus Properties of Hot Mix Asphalt Containing Waste Engine Oil. Asian Research Publishing Network, 2016.