Tu shuo Zhongguo gu dai ke ji cheng jiu = Tushuo Zhongguo gudai keji chengjiu = 图说中国古代科技成就 = Illustrated Chinese Ancient Science and Technology Achievements
edited by Song Zhenghai
Zhejiang Jiaoyu Chubanshe, 2000
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Yang, Xianyi, 1915-2009
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translated by Yang Xianyi and Gladys Yang
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Needham, Joseph
Chinese science
Pilot Press, 1945
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Forbes, R.J.
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Leiden E.J. Brill 1965
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