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solar cycle 24 begins
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Solar Cycle 24 Prediction Graph
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2008 Feb 21: Total Lunar Eclipse
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Mendeleev's 1869 Periodic Table
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MENDELEEV, DMITRI IVANOVICH (1834 - 1907). Z. Chem. 1869, 12, 405, WITH Osnovy Khimii, St. Petersburg, 1869.
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G1.9+0.3