Mule, S.; Nguta, C.; Kamau, G.; Ongera, G.; Wangila, P.; Kiplimo, J.; Chirchir, D. Retention Efficiencies of Halogenated and Non-Halogenated Hydrocarbons in Selected Wetland Ecosystem in Lake Victoria Basin. Int. J. Environ. 2015, 4, 38-52.