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the produce of two days', or two hours' labour, should be worth double of what is usually the produce of one day's, or one hour's labour.' 去书内
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  • Katherine Zhou Katherine Zhou

    “One beaver costs twice long time of labor compare with hunting deer so that 1 beaver = 2 deers “doctrine of political economy

    2021-04-19 喜欢(0) 回复(0)

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