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Predicting Weather by Observing the Sea, Sky, and Birds
Zheng He
Aboard my treasure ships, the lives of twenty thousand men and the Emperor's charge depended not on charts alone, but on reading the language...
Predicting Weather by Observing the Sea, Sky, and Birds
Zheng He
Aboard my treasure ships, the lives of twenty thousand men and the Emperor's charge depended not on charts alone, but on reading the language...