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... ago, humans and oxen carried manure to rice terraces in china . today, those same terraces may be fertilized with nitrogen, ... ago, humans and oxen carried manure to rice terraces in China . Today, those same terraces may be fertilized with nitrogen, ...
Speeches | 2017-08-28
... and writing about what are today 44 countries from china to mali. in the 18th century, british navigator and cartographer, ... later, she would be among the first americans to enter china after the thaw in relations sparked by richard nixon's visit with mao ...
Speeches | 2018-06-06