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) DAY PR,Particle fractionation and particle-size analysis,Methods of Soil Analysis,,"American Society of Agronomy, Inc.",1965,,,545-567,https://cir.nii.ac.jp/crid/1573387449923407744,