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\bibitem{Isenbugel+Weilenmann1985} Isenbugel, E., \& Weilenmann, P. (1985). Colobomes of the Eyelid in an Ounce T (UNCIA-UNCIA, SCHREBER 1775) from the Zurich-Zoological-Garden. \textit{Praktische Tierarzt}, \textit{66}(1), 61--62.

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