@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00044543, author = {高尾, 直三郎 and 増田, 清一}, month = {}, note = {種別: 実習報告}, title = {日立鉱山 . Report of the Excursion/Hidachi Mine/ Report of the Excursion in The Hitachi Mine}, year = {1909} }