Feature

  1. Toward a National Policy

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  2. AAAS

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  3. A Dissent

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  4. Clues from Ammonia

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  5. Dispute over the Standards

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  6. DDT Catalyst; UFO

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  7. Films of the Week

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  8. Front Matter

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  9. Dissent, Dissension at AAAS

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  10. The Delaney Amendment

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  11. Longevity Gives Bonus in Space

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  12. A Slight Error

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