１１）セメント製造業　第２表　１窯平均時間当りクリンカー焼出実績規模別セメントトン当り所要労働時間１１）セメント製造業　第２表　１窯平均時間当りクリンカー焼出実績規模別セメントトン当り所要労働時間

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The National Archives of Japan's Digital Archive provides access to the descriptions and digitized images of the historical records preserved by the National Archives of Japan. Anytime, anywhere, free...

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