Robert Kennedy Duncan

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Some unsolved problems in science

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The prizes of chemistry

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An industry revolutionized

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Harvesting floral perfumes

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Chemistry of commerce–VI.

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High temperatures and modern industry

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Chemistry of commerce–V.

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The wonders of cellulose

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Chemistry and the world’s food

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The fixation of nitrogen

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Mathematicians discovered the existence of a pseudoprime that is the sum of 10,333,229,505 known primes and contains roughly 295 billion digits but cannot be represented precisely because the mathematician who found it lacks sufficient RAM.

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I hope that after reading the following pages the leaders of the Y. M. C. A. will start a campaign to induce good young men to do nothing. If so, I shall not have lived in vain.

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