Feature

  1. Toy Train Obeys Voice

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  2. First Glances at New Books

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  3. Survey Confirms Hoover

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  4. Mice Have Disease Carriers

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  5. Device Aids Cleft Palate

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  6. Mexico to Hold Workers

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  7. Radium Reduces Fire Risk

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  8. “Surprise Ships” May Change Fashions

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  9. Canary Birds Aid Scientists

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  10. Bell Tones Studied by Physicist

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  11. Front Matter

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  12. No Danger in State Medicine

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