@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00013853,
 author = {早田, 宮田郎},
 month = {},
 note = {種別:卒業論文, 改名：早田義孝},
 title = {Report and Essay on 3rd Mine of Mitsui Yamano Colliery},
 year = {1921}
}