@phdthesis{oai:iwate-u.repo.nii.ac.jp:00014632,
 author = {NGUYEN, Sy Toan},
 month = {},
 school = {岩手大学},
 title = {Studies on the changes in soil organic matter and rice yield with manure application and climate change based on the over 30 years long-term experiment and statistical data in Yamagata, Japan},
 year = {2018}
}