About NAKATA Kazuyoshi
About River Restoration Res. Team, Water Environment Res. Group, Public Works Res. Inst.
About HAYASHI Norio
About Natural History Museum and Inst.
About OZAKI Masumi
About Chiba Biodiversity Center, Nature Conservation Div., Environmental and Community Affairs Dep., Chiba Prefectural ...
About OHTAKA Akifumi
About Dep. of Natural Sci., Fac. of Education, Hirosaki Univ.
About MIWA Junji
About River Restoration Res. Team, Water Environment Res. Group, Public Works Res. Inst.
About Plankton and Benthos Research
About Astacura
About Pacifastacus leniusculus
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About Fisheries animals other than fishes
About Animal taxonomy
About Population ecology
About 中部日本
About 利根川
About 流域
About 関東地方
About 北米
About 侵略的外来種
About シグナル
About ザリガニ
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About 暖水
About 拡大