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\bibitem{Muhammad_etal2020} {\textquotedblleft}\textit{Characterization of epicuticular wax structures on leaves of urban plant species and its association with leaf wettability}{\textquotedblright}. Muhammad S, Wuyts K, Nuyts G, De Wael K, Samson R, Urban Forestry \& Urban Greening \textbf{47}, 126557 (2020).   http://doi.org/10.1016/J.UFUG.2019.126557

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