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\bibitem{Girma_etal2021} {\textquotedblleft}\textit{Farmers{\textquoteright} willingness to contribute to the restoration of an Ethiopian Rift Valley lake : a contingent valuation study}{\textquotedblright}. Girma H, Huge J, Gebrehiwot M, Van Passel S, Environment, development and sustainability \textbf{23}, 10646 (2021).   http://doi.org/10.1007/S10668-020-01076-3

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