@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00046168,
 author = {小沼, 得四郎},
 month = {},
 note = {種別: 実習報告},
 title = {佐渡鉱山採鉱事業報告 [附図共2冊]．},
 year = {1907}
}