Image: 11th century long serpent fire arrow rocket launcher
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Description: An illustration of a "long serpent" fire arrow rocket launcher as depicted in the 11th century book Wujing Zongyao.
Title: 11th century long serpent fire arrow rocket launcher
Credit: Wujing Zongyao, from Science and Civilisation in China p. 496
Author: Zeng Gongliang, Ding Du, and Yang Weide
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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