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mother-of-pearl cloud
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References
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Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar
Ten Days That Vanished: The Switch to the Gregorian Calendar
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Is Cinco de Mayo Mexico's Independence Day?
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12 Novels Considered the “Greatest Book Ever Written”
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7 Everyday English Idioms and Where They Come From
Ethel Rosenberg arrested in August 1950. Photograph dated Aug. 8, 1950. American civilians executed for espionage. Spies, communists, Julius Rosenberg
Spies Like Us: 10 Famous Names in the Espionage Game
Internet http://www blue screen. Hompepage blog 2009, history and society, media news television, crowd opinion protest, In the News 2009, breaking news
Who Invented the Internet?

mother-of-pearl cloud

meteorology
Also known as: nacreous cloud

Learn about this topic in these articles:

description and formation

  • What's the difference between weather and climate?
    In climate: Cloud types

    …are known as nacreous or “mother-of-pearl” clouds because of their brilliant iridescent colours.

    Read More