Incoming Resources
- The big bang, a history of explosives, G. I. Brown ; foreword by Adam Hart-Davis
- The gunpowder age, China, military innovation, and the rise of the West in world history, Tonio Andrade
- Gunpowder, alchemy, bombards, and pyrotechnics : the history of the explosive that changed the world, Jack Kelly
- Gunpowder, alchemy, bombards, and pyrotechnics : the history of the explosive that changed the world, Jack Kelly