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) RICHARDS L. A.,Diagnosis and improvement of saline and alkali soils,Agriculture Handbook,,Oxford and IBH Publ. Co.,1968,60,,210-220,https://cir.nii.ac.jp/crid/1573387449760083200,