@article{oai:repository.dl.itc.u-tokyo.ac.jp:00028554,
 author = {二宮, 敏行},
 issue = {10},
 journal = {東京大学理学部弘報},
 month = {Dec},
 note = {application/pdf},
 pages = {6--7},
 title = {左と右},
 volume = {6},
 year = {1974}
}