Feature

  1. Manic Depression: A New Gene Defect

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  2. Science & Society

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  3. Louis de Broglie, 1892-1987

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  4. On the Trail of Elemental Matter

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  5. Rift Valley Fever: Long-Distance Diagnosis

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  6. Earth Sciences

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  7. Coming: Dietary Aids to Prevent Cancer?

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  8. Physics

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  9. Books

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  10. Thalidomide: Is There a Silver Lining?

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  11. Front Matter

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  12. AIDS Drug Approved, Vaccine Tested

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