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明治七年改正 地券(陸前国志田郡稲葉村字八坂沢目囲154番、田29歩、代価1円96銭8厘)
Documents Previously Classified Under General Library Classifications [Resources and Historical Collections Office]
Design for Iron Smelting Work at Kasai
Source materials for Engineering History: The University of Tokyo Digital Archive
Report on Limonite at Yanahara
Source materials for Engineering History: The University of Tokyo Digital Archive