Descartes Eye Investigation #3
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Descartes Principles Of Philosophy, 1699 #2
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Descartes Eye Investigation #2
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Descartes Principles Of Philosophy, 1699 #1
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Rene Descartes Discourse On Method
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René Descartes, Vortex Theory, 1644
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Descartes Principles Of Philosophy, 1699
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René Descartes, French Polymath #4
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Lunar Roving Vehicle
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