(Q33454029)
Statements
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Air density 2.7 billion years ago limited to less than twice modern levels by fossil raindrop imprints (English)
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David C Catling
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Sanjoy M Som
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Jelte P Harnmeijer
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Peter M Polivka
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28 March 2012
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484
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7394
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359-362
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Identifiers
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