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) OENEMA O,Approaches and uncertainties in nutrient budgets : implications for nutrient nmanagement and environmentap policies,European Journal of Agronomy,,,2003,20,,3-16,https://cir.nii.ac.jp/crid/1570009750085908096,