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  1. 秋山,吉寛 (アキヤマ,ヨシヒロ)
    2. https://www.lib.hokudai.ac.jp/dissertations/list/?FF=4&LANG=en&ACCN=2007090041
    Title in Japanese日本におけるカワシンジュガイ Margaritifera laevis の絶滅要因（二枚貝鋼イシガイ目）
    Title in EnglishFactors causing extinction of a freshwater pearl mussel, Margaritifera laevis in Japan (Bivalvia: Unionoida)
    Year of conferral of degrees2007
    Type of degree / Kind of academic degree1（課程博士） / 103（博士(地球環境科学)）
    Report number8382
    Date of conferral of degrees2007-09-25
    The primary examiner / A deputy examiner岩熊,敏夫 / 東,正剛 齊藤,隆 野田,隆史 粟倉,輝彦
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    Summary8382_akiyama.pdf