Feature

  1. Aztec Calendar Found

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  2. Front Matter

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  3. Earthquakes Send Their Own Telegrams

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  4. Gas to Prevent Smoke

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  5. Whales Champion Divers

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  6. Dean of American Botanists

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  7. Poisons May Check Beetles

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  8. Light Speeds Factory Work

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  9. New Chemical to Prevent Auto Freezing

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  10. Yeast Is Vitamin Source

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  11. Fingerprints of Muffins

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  12. Region of past Quakes

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