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) F.J. Peryea and R. Kammereck,Use of Minolta SPAD‐502 chlorophyll meter to quantify the effectiveness of mid‐summer trunk injection of iron on chlorotic pear trees,Journal of Plant Nutrition,0190-4167,Informa UK Limited,1997-11,20,11,1457-1463,https://cir.nii.ac.jp/crid/1361137045469192064,https://doi.org/10.1080/01904169709365348