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\bibitem{Baars_etal2001} Baars, M., Mathes, E., Stein, H., \& Steinh{\"o}rster, U. (2001). \textit{Die {\"A}sche} (0thVol. 640). Die Neue Brehm-B{\"u}cherei. Hohenwarsleben: Westarp Verlag.

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