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Fred Bortz Phd
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The Photon
Author: Fred Bortz Phd
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Martian Fossils on Earth?
Author: Fred Bortz Phd
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The Big Bang Theory
Author: Fred Bortz Phd
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The Proton
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Laws of Motion and Isaac Newton
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Johannes Kepler and the Three Laws of Planetary Motion
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Meltdown!
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Beyond Jupiter
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