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\bibitem{Hendriks_etal2019} {\textquotedblleft}\textit{Conservation of the Amsterdam sunflowers : from past to future}{\textquotedblright}. Hendriks E, Geldof M, van den Berg KJ, Monico L, Miliani C, Moretti P, Iwanicka M, Targowski P, Megens L, de Groot S, van Keulen H, Janssens K, Vanmeert F, van der Snickt G page 175 (2019).

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