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) Shvetsov,On the petrography and origin of the Oka Limestone of the Mikhailov-Aleksin region,Trudy Moskovskogo Geologicheskii Tresta,,,1935,10,,1,https://cir.nii.ac.jp/crid/1370846644749557545,