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) Casagrande,Characteristics of cohesionless soil affecting the stability of slopes and earth fills,J. Boston Soc. Civil Engrg.,,,1936,,,13,https://cir.nii.ac.jp/crid/1372820655233362707,