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The Reference Shelf, 2012 Subscription (edition 2012)
by Hw Wilson
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Wikipedia in English
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The US transportation system is a complex national concern, closely tied to our nation's economy, defense, and national security. Paying for its construction and maintenance has become an even more complicated political issue in the early twenty-first century. This articles in this volume addresses these issues and how they affect the future viability of the nation's transportation routes.
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