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Backgrounder
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 Backgrounder: Major plane crashes in Nigeria in last decade 2012-06-04 13:52:13
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 Backgrounder: Major air crashes worldwide since 2010 2012-06-04 12:04:19
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 Backgrounder: Major Tu-134 plane accidents in recent years 2012-06-04 12:05:17
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 Backgrounder: Major air crashes since 2010 2012-06-04 12:03:39