Average daily (Monday through Friday) circulation fell 2.1% from the same period a year earlier among 745 newspapers that submitted data, according to the Newspaper Association of America's analysis of figures released Monday by the Audit Bureau of Circulation.

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Such tree-ring records, along with other so-called proxy archives, can provide a wealth of information about volcanic events and their varying impacts around the globe because of resulting shifts in atmospheric circulation and other climate changes, dating for centuries prior to the period of instrumental record.

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Many of the worst problems will hit retailers, who in some countries will be in the thick of the January sales, the period when shops are busiest and the amount of money in circulation is largest (see article).

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Its circulation shot up by 15% in the six months to October from the same period in 2000.

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The daily circulation of the Post surpassed the News for the first time during the previous six-month period.

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According to the most recent ABC newspaper sales figures, the Belfast Telegraph remained Northern Ireland's biggest selling daily paper with a circulation of 53, 771 between July and December 2011, down 8.1% on the same period in 2010.

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On Wednesday, the company said it expected growth in earnings per share - profits after tax divided by the number of shares in circulation - to fall to single digits next year, down from 13% during the latest three month period.

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The News' weekday circulation averaged 693, 382 during the six months ended Sept. 30, a 1% increase over the same period a year earlier, which partially reversed recent declines.

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