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) VOLLENWEIDER R. A.,Advances in defining critical loading levels for phosphorus in lake eutrophication,Mem. 1st Ital. Idrobiol.,,,1976,33,,53-58,https://cir.nii.ac.jp/crid/1573387451062475776,