Zheng He xia xi yang shi tan
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Zheng He xia xi yang shi tan

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24 min read
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92 pages 2007

About This Book

杨槱院士从小热爱船舶海洋,尤其对郑和七下西洋的航海业绩十分仰慕.本书就是积几十年来的潜心研究后新编和一本小册子.

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