Best True Ghost Stories of...
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Johannes Kepler and Planetary...
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The Amazing Mrs. Mimms
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Poltergeists
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The First Book of Sound
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UFOs, a pictorial history...
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Dinosaur Days
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Poltergeists: Hauntings and...
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Sound
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Those Mysterious UFO's: The...
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American Astronauts and Space...
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Dinosaurs That Swam and Flew
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Viruses, Life's Smallest...
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The Spy Who Never Was, and...
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Let's find out about Mars
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The Moving Coffins
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Let's find out about rocks...
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Let's Find Out about Sound
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First Book of Deserts
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Robotics, Past, Present, &...
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Colonies in Orbit: The Coming...
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The Battle of the Dinosaurs
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Comets
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The first book of Berlin;...
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