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Skelett vom Wal MK. Abbildung aus Meyers Konversionlexikon Skelett eines Walfisches de CommonsHelper Stefan Khn de PDMeyers Original upload log page de SkelettvomWalMK Aka bytes no aus Meyers Konversionlexikon Skelett eines Walfisches Stefan Khn bytes no aus Meyers Konversionlexikon Skelett eines Walfisches Vestigiality