@article{oai:repository.dl.itc.u-tokyo.ac.jp:00032339, author = {坪井, 忠二 and 実川, 顕 and 田島, 広一}, issue = {8}, journal = {地震研究所彙報別冊}, month = {Oct}, pages = {475--552}, title = {Gravity Survey along the Lines of Precise Levels throughout Japan by Means of a Worden Gravimeter. : Part 9. Kyushu District}, volume = {4}, year = {1956} }