Sporopollen Assemblage and its Palaeoecologic Significance of Yan'an Formation in Yuheng Coal Field, Northern Shaanxi Province[J]. COAL GEOLOGY & EXPLORATION, 1988, 16(1): 12-17.
Citation: Sporopollen Assemblage and its Palaeoecologic Significance of Yan'an Formation in Yuheng Coal Field, Northern Shaanxi Province[J]. COAL GEOLOGY & EXPLORATION, 1988, 16(1): 12-17.

Sporopollen Assemblage and its Palaeoecologic Significance of Yan'an Formation in Yuheng Coal Field, Northern Shaanxi Province

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