@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033330,
 author = {Yokoyama, Izumi and Surjo, Ismangan and Nazhar, Bujung},
 issue = {2},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Jun},
 note = {application/pdf},
 pages = {303--315},
 title = {16. Volcanological Survey of Indonesian Volcanoes : Part 4. A Gravity Survey in Central Java},
 volume = {48},
 year = {1970}
}