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1)北極探検と極地観光(2018)「極地」2018,N0.2, P38-49 Shared | Aug 30, 2024 | 8.7 MB | |
2) 北極探検の歴史とその時代背景 (2019).pdf Shared | Aug 30, 2024 | 5.3 MB | |
3)Arctic Exploration History (2019) Mombetsu Sympo Proceedings Shared | Aug 30, 2024 | 3.6 MB | |
4) セーベリナ・ヤゼムリャ諸島.pdf Shared | Aug 30, 2024 | 3.2 MB |