@article{oai:tokyo-metro-u.repo.nii.ac.jp:00002653,
 author = {マエジマ, イクオ and Maejima, Ikuo},
 issue = {2},
 journal = {Geographical Reports of Tokyo Metropolitan University},
 month = {Jul},
 pages = {77--103},
 title = {Natural seasons and weather singularities in japan},
 year = {1967}
}