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) Studds,"The effect of ion valence on the swelling behaviour of sodium montmorillonite, Polluted and Marginal Land-96",,,,1996,,,139,https://cir.nii.ac.jp/crid/1370851344681170570,