Asante, K., T. Agusa, R. Kubota, A. Subramanian, O. Ansa-Asare, C. Biney, and S. Tanabe. “Evaluation of Urinary Arsenic As an Indicator of Exposure to Residents of Tarkwa, Ghana”. West African Journal of Applied Ecology, vol. 12, no. 1, Sept. 2009, doi:10.4314/wajae.v12i1.45751.