File:Yuan Dynasty - waterwheels and smelting.png

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	09:19, 28 December 2007		800 × 592 (262 KB)	Mywood	{{Information \|Description= This medieval printed illustration depicts waterwheels powering the bellows of a blast furnace in creating cast iron. This illustration is taken from the 14th century treatise Nong Shu, written by Wang Zhen in 1313 AD, during t

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