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\bibitem{Brook_etal2011} Brook, G. A., Railsback, L. B., \& Marais, E. (2011). Reassessment of carbonate ages by dating both carbonate and organic material from an Etosha Pan (Namibia) stromatolite: Evidence of humid phases during the last 20ka. \textit{Quaternary International}, \textit{229}(1), 24--37.

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