@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034320,
 author = {坪井, 忠二},
 issue = {2-4},
 journal = {東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University},
 month = {Jul},
 note = {application/pdf},
 pages = {105--109},
 title = {11. 地殼の下層物質の密度にこ就いて},
 volume = {22},
 year = {1946}
}