Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takahashi Akira,Imperialism and American Expansion at the End of the Ninteenth Century,人文研究,0491-3329,大阪市立大学文学部,1968,19,8,661-691,https://cir.nii.ac.jp/crid/1390290699897174144,https://doi.org/10.24544/ocu.20180417-061