Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yasuda Shigeru,A Study on the Thoughts of the Organic Agriculture Theories,神戸大学農業経済,0286-0473,神戸大学農学部,1985-12,20,,1-17,https://cir.nii.ac.jp/crid/1390290699905952512,https://doi.org/10.24546/00178161