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  1. Physical Sciences Notes

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  2. Earth and Environment Notes

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  3. Comets and the IQSY

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  4. Bufus in Louisiana

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  5. Books of the Week

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  6. Negro Militancy: A Complicating Dimension

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  7. Back Matter

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  8. Life Sciences Notes

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  9. Protein Structure in Days

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  10. Films of the Week

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  11. New Ideas and Gadgets

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  12. A Maser in Orbit

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