@article{oai:nipr.repo.nii.ac.jp:00000900,
 author = {Nagata, Takesi},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Oct},
 note = {P(論文)},
 pages = {i--ii},
 title = {Preface},
 volume = {9},
 year = {1978}
}