@article{oai:seijo.repo.nii.ac.jp:00002940,
 author = {齋藤, 正},
 issue = {27},
 journal = {成城大學經濟研究},
 month = {Nov},
 note = {P(論文)},
 pages = {37--60},
 title = {外部経済論(2)},
 year = {1968}
}