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\bibitem{Godoi_etal2009} {\textquotedblleft}\textit{Indoor air quality assessment of elementary schools in Curitiba, Brazil}{\textquotedblright}. Godoi RHM, Avigo D, Campos VD, Tavares TM, de Marchi MRR, Van Grieken R, Godoi AFL, Water, air, and soil pollution : focus \textbf{9}, 171 (2009).   http://doi.org/10.1007/S11267-009-9220-3

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