@phdthesis{oai:toyo.repo.nii.ac.jp:00012569,
 author = {大石, 正行},
 month = {2020-12-14, 2020-12-14, 2020-12-14},
 note = {2020},
 school = {東洋大学},
 title = {土粒の粉砕メカニズムに関する研究},
 year = {}
}