Feature

  1. Tides Slow Earth

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  2. Classics of Science: Pestalozzi on Education

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  3. First Glances at New Books

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  4. Back Matter

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  5. Front Matter

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  6. Money Sacred to Indians

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  7. More Light!

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  8. Primitive Races Survive in African Desert

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  9. New Value of Electron

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  10. Inauguration Movies to Go “On the Air”

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  11. “Decibel” Latest Unit

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  12. The Values of Science

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