著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Hasegawa,"Carbon-isotope stratigraphy and its chronostratigraphic significance for the Cretaceous Yezo Group, Kotanbetsu area, Hokkaido, Japan",Paleontological Research,,,2000,4,,95,https://cir.nii.ac.jp/crid/1371695768903784329,