@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00044538,
 author = {宇都宮, 俊彦},
 month = {},
 note = {種別: 実習報告},
 title = {明電燈 ． Report ／ On 40 Horse-Power Continuous Current Shunt Motors},
 year = {1909}
}