File:武经总要全前集卷十二火药制法.jpg

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Description	English: Gunpowder formula in Wujing zongyao part I, vol 12
Date	1044
Source	Wujing Zongyao 武经总要
Author	曾公亮 11th century

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Gunpowder

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Author	Picasa
Software used	Picasa
Exif version	2.2
Unique image ID	eadb1a29ca1b15207b3606c8f5739ad4

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