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) WEFER G,Isotope paleontology : Growth and composition of extant calcareous species.,Mar. Geol.,,,1991,100,,207-248,https://cir.nii.ac.jp/crid/1573950401445867392,