@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033249,
 author = {北信微小地震・地殻変動観測所},
 issue = {1},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Mar},
 note = {application/pdf},
 pages = {47--51},
 title = {長野県奈川渡ダムにおける微小地震観測},
 volume = {50},
 year = {1975}
}