报告题目：Recommending the Xiaoyangqiao section in Dayangcha of North China as Auxiliary Stratotype Section and Point (ASSP) for the base of the Ordovician System
报告人：Prof. Dr. Gabriella Bagnoli from Department of Earth Sciences, University of Pisa, Italy
时间：5月15日（周三）上午10:30
地点：图书馆三楼报告厅
时间：5月15日（周三）上午10:30
地点：图书馆三楼报告厅
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