WASET
Udotong, J. , Udotong, I. , Eka, O. (2015), 'Spatio-temporal Variations in Heavy Metal Concentrations in Sediment of Qua Iboe River Estuary, Nigeria', World Academy of Science, Engineering and Technology, Open Science Index 102, International Journal of Environmental and Ecological Engineering, 9(6), 681 - 685.