1 หนังสืออิเล็กทรอนิกส์โดย Yuandong Zhang
Stig M. Bergstrom & Stanley C. Finney: Darriwilian to Katian (Ordovician) Graptolites from Northwest China
Darriwilian to Sandbian (Ordovician) Graptolites from Northwest China analyzes the significance of these exquisite, mostly pyritic, graptolites of the middle to late Ordovician period from North Chin …
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