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Testing universe flatness with probes
Cosmological measurements of the average spatial curvature of the spacetime metric are one of only a... more |
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Open My Eyes: More Children’s Object Lessons
reference or background of the lesson Kenneth A. Mortonson is a graduate of Northwestern University with a degree in engineering...... more |
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The Advent Instructor
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That Seeing, They May Believe: 52 Children’s Object Lessons
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