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Hynek, Joseph Allen, 1910- ed.
Astrophysics : a topical symposium commemorating the fiftieth anniversary of the Yerkes Observatory and a half century of progress in astrophysics. / J. A. Hynek, editor.
— 1st ed. — New York : McGraw-Hill, 1951. xii, 703 p. : il. ; 24 cm. — (McGraw-Hill astronomical series)
Incluye referencias bibliográficas e índice.
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