Scratch circles and circular purported ammoglyphs: Novel observations from the Cape south coast of South Africa
| Autor: | Helm, Charles W., Catchpole, Robin M., Cawthra, Hayley C., Cowling, Richard M., De Vynck, Jan C., Dixon, Mark G., Rust, Renée, Stear, Willo, Thesen, Guy H.H. |
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| Zdroj: | In Proceedings of the Geologists' Association June 2024 135(3):247-259 |
| Databáze: | ScienceDirect |
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