@article{oai:teapot.lib.ocha.ac.jp:02001073,
 author = {山田},
 journal = {理科部會報},
 month = {Mar},
 note = {紀要論文, その他のタイトル:地球の年齢},
 pages = {18--31},
 title = {地球ノ年齢},
 volume = {20},
 year = {1916}
}