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Underground : subway systems around the world
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"Smelly" Kelly and his super senses : how James Kelly's nose saved the New York City subway
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Viewing Pennsylvania trolleys
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Subway ride
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Subway : the story of tunnels, tubes, and tracks
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The secret subway
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City trains
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Monorail trains
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Railroaded : a motorman's story of the New York City subway
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I saw an ant in a parking lot
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How cycling can save the world
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Everything I know about cars : a collection of made-up facts, educated guesses, and silly pictures about cars, trucks, and other zoomy things
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Park rangers and what they do
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Amusement parks of Pennsylvania
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100 parks, 5,000 ideas : where to go, when to go, what to see, what to do
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A history of Lakemont Park, 1894-1989
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Alaska's magnificent parklands
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Adventures in America's western parks. Fire & ice Hawaii and Alaska
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The Lincoln Highway : coast to coast from Times Square to the Golden Gate
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Lost in my own backyard : a walk in Yellowstone National Park
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Jurassic Park : a novel
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Death Valley National Park
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Autonomy : the quest to build the driverless car-- and how it will reshape our world
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Exploring Canada's spectacular national parks
