books.google.com - A commanding encyclopedia of the history and principles of spaceflight-from earliest conceptions to faster-than-light galaxy-hoppingHere is the first truly comprehensive guide to space exploration and propulsion, from the first musings of the Greeks to current scientific speculation about interstellar...http://books.google.com/books/about/The_Complete_Book_of_Spaceflight.html?id=dt7ow1Af86YC&utm_source=gb-gplus-shareThe Complete Book of Spaceflight
