@article{oai:nipr.repo.nii.ac.jp:00000836,
 author = {Nagata, Takesi},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Aug},
 note = {P(論文)},
 pages = {i--ii},
 title = {Foreword},
 volume = {6},
 year = {1976}
}