@article{oai:tokyo-metro-u.repo.nii.ac.jp:00003021,
 author = {オカ, シュウイチ and ミカミ, タケヒコ and Oka, Shuichi and Mikami, Takehiko},
 issue = {42},
 journal = {Geographical Reports of Tokyo Metropolitan University},
 month = {},
 title = {Preface},
 year = {2007}
}