@article{oai:repository.dl.itc.u-tokyo.ac.jp:00027831,
 author = {田沢, 仁},
 issue = {4},
 journal = {東京大学理学部弘報},
 month = {Mar},
 note = {application/pdf},
 pages = {10--12},
 title = {12年一昔},
 volume = {21},
 year = {1990}
}