1.

図書
図書
1. Is Pluto a planet? : a historical journey through the solar system (pbk)
David A. Weintraub
出版情報: Princeton, N.J. ; Woodstock : Princeton University Press, 2009, c2007
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2.

図書
図書
2. How I killed Pluto and why it had it coming (alk. paper)
Mike Brown.
出版情報: New York : Spiegel & Grau, 2010.
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