The second kind of indirect labour is that employed in making tools or implements for the assistance of labour.

第四节第二种间接劳动是制造劳动工具或器具所使用的劳动。

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The second kind of indirect labour is that employed in making tools or implements for the assistance of labour.

第四节第二种间接劳动是制造劳动工具或器具所使用的劳动。

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