@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00044593,
 author = {岡部, 榮一 and 原田, 保之助},
 month = {},
 note = {種別: 実習報告},
 title = {鉄道院碓氷峠 ． 鉄道院東部鉄道管理局碓氷峠運転動力変更工事 ／ Report on the Usui-Toge Electric Locomotion of the Eastern Divisional Superintendent Office of the lmperial Goverment Railways ／ Report on Electric Locomotion Works at Usui-Toge Line by The Eastern Divisional Superintendent Office of The lmperial Goverment},
 year = {1911}
}