Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIRAISHI Gaku,Profitability and Capital Accumulation of Large-scale Upland Farming in Tokachi District,Japanese Journal of Farm Management,03888541,The Farm Management Society of Japan,2005,43,1,143-148,https://cir.nii.ac.jp/crid/1390001204486409728,https://doi.org/10.11300/fmsj1963.43.1_143