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  Urban Mass Transit: The Life Story of a Technology - Robert C. Post - Google Books

  http://books.google.de/?id=lZ6Kke0MZWwC

  This volume in the Greenwood Technographies series covers urban mass transit - that is, the technologies that allow cities to move large numbers of people around. Just a few hundred years ago, the size of cities was limited by the time it took people to…

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  Firearms: The Life Story of a Technology - Roger A. Pauly, Roger Pauly - Google Books

  http://books.google.de/books?id=izGOfMdSm2IC

  Guns have existed in various forms for hundreds of years, and few objects have had such an immense impact on the history of the world. But how did firearms develop? Why did the styles of guns change over the years? Firearms tells the life story of the gun,…

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