@article{oai:soar-ir.repo.nii.ac.jp:00011361,
 author = {桂,  瑛一},
 journal = {信州大学農学部農場報告},
 month = {Jan},
 note = {Article, 信州大学農学部農場報告 5: 97-99(1990)},
 pages = {97--99},
 title = {連作障害の経営経済的要因},
 volume = {5},
 year = {1990}
}