Ma Yuan's studies of the properties of water, southern Song Dynasty China, ca. 1190 - 1225 CE
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Ma Yuan's studies of the properties of water, southern Song Dynasty China, ca. 1190 - 1225 CE
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Ma Yuan's studies of the properties of water, southern Song Dynasty China, ca. 1190 - 1225 CE
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Ma Yuan's studies of the properties of water, southern Song Dynasty China, ca. 1190 - 1225 CE
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Tang Dynasty woman, China
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