Category:Roca Formation (USA)

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English: also Roca Shale
<nowiki>Roca Formation; Permian geologic formation of Oklahoma, United States</nowiki>
Roca Formation 
Permian geologic formation of Oklahoma, United States
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  • United States of America
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Media in category "Roca Formation (USA)"

The following 2 files are in this category, out of 2 total.