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) JARVIS SC,Opportunities for reducing the environmental impact of dairy farming managements : a system approach,Grass and Forage Science,,,1996,51,,21-31,https://cir.nii.ac.jp/crid/1573668925644600832,