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Regulations for River Works: Huai-Xu Circuit, 5 Volumes; Huai-Yang Circuit, 7 Volumes [1]
Public domain

Regulations for River Works: Huai-Xu Circuit, 5 Volumes; Huai-Yang Circuit, 7 Volumes [1]

乾隆刊 · print

From the collection of National Diet Library, Japan. Free to download, adapt and use — no permission needed.

Credit line題定河工則例淮徐道屬5卷淮揚道屬7卷 [1]. 乾隆刊. National Diet Library, Japan. Public domain.

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