Author:

Tokunaga,S.

Year:

1955

Title:

Pollen analysis of the known coal seams in the Biba Bibai area, Sorachi District, Ishikari Coal Fields, Hokkaido.

Reference:

Tokunaga,S. (1955) Pollen analysis of the known coal seams in the Biba Bibai area, Sorachi District, Ishikari Coal Fields, Hokkaido. Bulletin of the Geological Survey of Japan (Chishitsu Chosajo Geppo) Vol. 6 # 9 P. 11- 32

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