@article{oai:nipr.repo.nii.ac.jp:00001117,
 author = {Hirasawa, Takeo},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Mar},
 note = {P(論文)},
 title = {Introductory Remarks (Part I)},
 volume = {18},
 year = {1981}
}