Hudunpao-wujingzongyao.jpg
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Summary
| Description |
English:
The hu dun pao in the Wujing Zongyao
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| Date | |
| Source |
Ming dynasty version of en:Wujing Zongyao Immediate source: Science and Civilisation in China. Volume 5. Chemistry and Chemical Technology. Part 7. Military Technology: The Gunpowder Epic by Joseph Needham. page 278 |
| Author | Zeng Gongliang, Ding Du and Yang Weide |
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer . This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |