[{"id":"2006-x-1jlvgbt","type":"article-journal","title":"「チャシ即ち蝦夷の砦」と「北千島調査報文」(コラム 歴史の風)","author":[{"literal":"宇田川 洋"}],"issued":{"date-parts":[[2006]]},"DOI":"10.24471/shigaku.115.7_1257","URL":"https://doi.org/10.24471/shigaku.115.7_1257","language":"ain"}]