著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Takanori Horimoto and Yoko Mitani and Mari Kobayashi and Kaoru Hattori and Yasunori Sakurai,Seasonal and spatial occurrence of northern fur seals Callorhinus ursinus around northern Japan,Mammal study,13434152,Tokyo : The Mammal Society of Japan,2017-03,42,1,51-56,https://cir.nii.ac.jp/crid/1524232504989059072,https://doi.org/10.3106/041.042.0106