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) BREMNER JM,Total nitrogen,Methods of Soil Analysis,,American Society of Agronomy,1982,,,595-624,https://cir.nii.ac.jp/crid/1570291226053723136,