Deep Space Propulsion: A Roadmap to Interstellar Flight (Astronomers' Universe)
ISBN: 1461406064
Buy on Amazon
Found in 1 comment on Hacker News
eloisius · 2012-12-19 · Original thread
A pretty interesting read that addresses these questions is

Deep Space Propulsion: A Roadmap to Interstellar Flight

http://www.amazon.com/Deep-Space-Propulsion-Interstellar-Ast...

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