books.google.com - Gunpowder studies are still in their infancy despite the long-standing civil and military importance of this explosive since its discovery in China in the mid-ninth century AD. This volume is the first to develop the implications of the subject, not just in the sense of relating it to changing military...http://books.google.com/books/about/Gunpowder_Explosives_And_the_State.html?id=7n6Cg9znFrUC&utm_source=gb-gplus-shareGunpowder, Explosives And the State
