books.google.com - The Gunpowder Epic is one of three planned publications on military technology within Dr Needham's immense undertaking. The discovery of gunpowder in China by the 9th century AD was followed by its rapid applications. It is now clear that the whole development from bombs and grenades to the invention...http://books.google.com/books/about/Science_and_Civilisation_in_China_Milita.html?id=BZxSnd2Xyb0C&utm_source=gb-gplus-shareScience and Civilisation in China: Military technology : the gunpowder epic
