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C. Gramling. Earth’s core may have hardened just in time to save its magnetic field. Science News. Vol. 195, March 2, 2019, p. 13.
C. Crockett. Mercury’s surface still changing. Science News. Vol. 190, No. 9, October 29, 2016, p. 10.
C - Crockett - Mercury - Landscape - Science
C. Crockett. Mercury’s stunning landscape mapped. Science News. Vol. 189, June 11, 2016, p. 15.
C. Crockett. Origin date...
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