1.

図書
図書
1. White dwarfs--black holes : an introduction to relativistic astrophysics
by Roman Sexl, Hannelore Sexl ; translated from the German by Patrick P. Weidhaas
出版情報: New York : Academic Press, 1979
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2.

図書
図書
2. Black holes, quasars & the universe (pbk.)
Harry L. Shipman
出版情報: Boston : Houghton Mifflin, 1976
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