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Paul Bachhausen: Salamandra salamandra terrestris
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Paul Bachhausen: Salamandra saalamandra terrestris
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Paul Bachhausen: Salamandra salamandra terrestris
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Paul Bachhausen: Tussilago farfara
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Paul Bachhausen: Rana temporaria
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Paul Bachhausen: Waldweier
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Paul Bachhausen: Hygiene Bsal Beprobung