Nilssonia bed of Hokkaido and its flora.
収録刊行物
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- Sci.Rep.Tohoku Imp.Univ., Ser.
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Sci.Rep.Tohoku Imp.Univ., Ser. 27 57-72, 1925
Sci.Rep.Tohoku Imp.Univ., Ser. 27 57-72, 1925