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Gesteinsabbau 1 Lagerstätte 1 Steinbruch 1 Tonerde 1 neogene 1 neogén 1 paleontologie 1 more ...
Gesteinsabbau 1 Lagerstätte 1 Steinbruch 1 Tonerde 1 neogene 1 neogén 1 paleontologie 1 more ...
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