Unfriendly Fire: The Promising Life, Military Service and Senseless Murder of US Army Technician Fifth Grade Floyd O. Hudson Jr.

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The Ghost Lake -- The True Story of Louis Agassiz

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Exploring the World of Chemistry: From Ancient Metals to High-Speed Computers

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Exploring the History of Medicine: From the Ancient Physicians of Pharaoh to Genetic Engineering

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100 Scientists Who Shaped World History

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Exploring the World of Physics: From Simple Machines to Nuclear Energy

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100 Scientists Who Shaped World History

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Designing second language performance assessments

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