These data provide ample preliminary evidence that the NFL should sponsor a broad study in a larger group of NFL players.

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As part of the compromise, ICANN also agreed to conduct a broad study of the initial election and the implications for selecting future at-large candidates.

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But the teachers would have none of the head's idea, arguing that all children have the right to study a broad curriculum.

ECONOMIST: Politics and education

Gordon is a 72 year-old economist who dedicated his career to the study of broad macroeconomic trends and Brynjolfsson is a 51 year-old economist who works alongside the technological wizards at MIT.

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The study looked at networks in a broad range of communities throughout the country from Miami, FL to Whatcom County, WA. The sites were rich and poor, urban and rural, and those with relatively high hospital usage and those with lower utilization.

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Dean Cliver, professor of food safety emeritus at University of California Davis, said it would be premature to draw broad conclusions about all soda fountains from a localized study.

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Mr Lieven's impressively broad sweep is well complemented by a more tightly focused study of Russian imperialism at work: an excellent, meticulously researched biography of Prince Gregory Potemkin, who in the late 18th century was the most powerful man in Russia.

ECONOMIST: Russian history