@article{oai:nipr.repo.nii.ac.jp:00002266,
 author = {Okitsugu, Watanabe},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Dec},
 note = {P(論文)},
 title = {Preface},
 volume = {51},
 year = {1996}
}