Author:

Li,Z.P.

Year:

1982

Title:

Acritarchs from the Upper Machiakou Formation of North China and its geological age.

Reference:

Li,Z.P. (1982) Acritarchs from the Upper Machiakou Formation of North China and its geological age. International Palynological Conference,5th the Nanjing Institute of Geology and Palaeontology,(Academia Sinica) Vol. 21 # 6 P. 715- 734

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