@article{oai:repository.dl.itc.u-tokyo.ac.jp:00023069,
 author = {北岡, 竜海},
 issue = {2},
 journal = {生産研究},
 month = {Feb},
 note = {application/pdf},
 pages = {83--85},
 title = {飛揚時の気象と気球追跡},
 volume = {14},
 year = {1962}
}