Happy Birthday to the Richter Scale inventor: It's National Richter Scale Day - CBS Los Angeles
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The Richter Scale measures quakes in a range from 0 to 9. On the scale, each increase in number represents an earthquake 10 times more powerful.
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Boxoffice-November.06.1978
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Richter Scale Day – Fun Holiday
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History Archive - STORIES: The Foundation for the AIDS Monument
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2007-2008 Peru State Times (Peru, NE) - issues 1-10 by Peru State
NATIONAL RICHTER SCALE DAY: National Richter Scale Day on April 26
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It's National Richter Day! On this day in 1900 Charles Richter
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Germany Is Celebrating Gerhard Richter's 90th Birthday With a
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Timeline of United States inventions (1890–1945) - Wikipedia
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63rd Annual GRAMMY AWARDS® Program Book by AFMLA - Issuu
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2007-2008 Peru State Times (Peru, NE) - issues 1-10 by Peru State