Astuti, Widi, Endang Tri Wahyuni, Agus Prasetya, and I Made Bendiyasa. “The Character of Dual Site Adsorbent on Coal Fly Ash Toward Benzene Adsorption”. European Journal of Sustainable Development 3, no. 3 (October 1, 2014): 227. Accessed May 5, 2024. http://ojs.ecsdev.org/index.php/ejsd/article/view/156.