← Sources Research literature Article 2006 「チャシ即ち蝦夷の砦」と「北千島調査報文」(コラム 歴史の風) 宇田川 洋 Edit History (2) Restricted archive: 0 pages. Log in to read. Summary 史学雑誌 Bibliographic information Author 宇田川 洋 Date 2006 Type Article Languages Ainu, Japanese Scripts Kana, Kanji Digital access & links DOI doi:10.24471/shigaku.115.7_1257