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  1. 1

    Helium, child of the sun. [Rev.]. by Seibel, Clifford W.

    Published 1968
    Book

    Helium, child of the sun. [Rev.].
  2. 2

    Argon, helium, and the rare gases the elements of the helium group. by Cook, Gerhard A. (Gerhard Albert), 1907-

    Published 1961
    Book

    Argon, helium, and the rare gases the elements of the helium group.

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