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\bibitem{Hellar-Kihampa_etal2013} {\textquotedblleft}\textit{Spatial monitoring of organohalogen compounds in surface water and sediments of a rural-urban river basin in Tanzania}{\textquotedblright}. Hellar-Kihampa H, De Wael K, Lugwisha E, Govindan M, Covaci A, Van Grieken R, The science of the total environment \textbf{447}, 186 (2013).   http://doi.org/10.1016/J.SCITOTENV.2012.12.083

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