Feature

  1. Underground Aluminum Cables Used Successfully

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  2. Clue to Vanished People

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  3. Watch Smog Weather

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  4. Nature Ramblings: Pumpkins

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  5. U. S. Manganese Process

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  6. Chemicals Aid Leukemia

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  7. Plastic Balls Substitute for Heart Valves

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  8. Fertilizing, Fumigation Done in Single Operation

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  9. Cows Feed Selves in Automatic Barn

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  10. Front Matter

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  11. Orion Appears in East

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  12. New Corrosion Protection Is Patented

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