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File:Self-tripped trespass land mine, Huolongjing.jpg

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Description The 'self-tripped trespass land mine' from the Chinese military compendium of the Fire Drake Manual (Huolongjing), written by Jiao Yu and Liu Ji in the mid 14th century.
Date 14th century, early Ming Dynasty
Source Page 195 of Joseph Needham's Science and Civilization in China: Volume 5, Part 7, Military Technology; the Gunpowder Epic (1986, Taipei: Caves Books Ltd.)
Author Jiao Yu and Liu Ji
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Date/TimeThumbnailDimensionsUserComment
current01:29, 12 December 2023Thumbnail for version as of 01:29, 12 December 2023824 × 965 (159 KB)Hohum (talk | contribs)Clearer version
10:16, 16 August 2008Thumbnail for version as of 10:16, 16 August 2008869 × 1,127 (415 KB)PericlesofAthens (talk | contribs){{Information |Description=The 'self-tripped trespass land mine' from the Chinese military compendium of the ''Fire Drake Manual'' (''Huolongjing''), written by Jiao Yu and Liu Ji in the mid 14th century. |Source=Page 195 of Joseph Needham's ''Science and

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