Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIGUCHI Tadashige,Political and Geographical Devide in the United States,Proceedings of the General Meeting of the Association of Japanese Geographers,,The Association of Japanese Geographers,2017,2017a,0,100068,https://cir.nii.ac.jp/crid/1390282680672714368,https://doi.org/10.14866/ajg.2017a.0_100068