@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00046347,
 author = {今村, 寅三},
 month = {},
 note = {種別: 実習報告},
 title = {本邦ニ於ケル海底採掘主要緒炭礦概況報告．},
 year = {1918}
}