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Historical Photos of China: In the Great Hsia. A Tsinghai flour mill. Wheel on left revolving. Bottom stone of mill above revolves. Upper stone suspended by a number of ropes. https://www.hpcbristol.sjtu.edu.cn//visual/Hv44-018
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Historical Photos of China: In the Great Hsia. A Tsinghai flour mill. Wheel on left revolving. Bottom stone of mill above revolves. Upper stone suspended by a number of ropes. https://www.hpcbristol.sjtu.edu.cn//visual/Hv44-018
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