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The Xiaoyangqiao section, Dayangcha, North China: the new global Auxiliary Boundary Stratotype Section and Point (ASSP) for the base of the Ordovician System | 77 |
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The Xiaoyangqiao section, Dayangcha, North China: the new global Auxiliary Boundary Stratotype Section and Point (ASSP) for the base of the Ordovician System | 2 | 2 | 2 | 1 | 2 | 1 | 0 |
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IUGS044-04-359.pdf | 187 |