Author:

Yu,J.

Year:

1990

Title:

The study of Early Cretaceous angiospermous pollen in northern China.

Foreign title:

In Chinese with English summary

Reference:

Yu,J. (1990) The study of Early Cretaceous angiospermous pollen in northern China. [ In Chinese with English summary ] Professional Papers of Stratigraphy and Palaeontology,(Diceng Gushengwu Lunwen Ji). Chinese Academy of Geological Sciences # 23 P. 212- 225

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