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Author - title
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| details | Early Namurian | China(Kansu) | Wu,X. et al. Recent research on the Carboniferous stratigraphy of Jingyuan eastern Gansu. | 1989 | |
| details | Namurian A | China(Kansu) | Zhu,H. Palynology and biostratigraphy of Namurian A in Jingyuan of Gansu. | 1989 |