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Journey Into A Black Hole /
by Branley, Franklyn Mansfield,
Publication:
New York : T.Y. Crowell, 1986
. 32 p. :
18 x 24 cm.
Date:1986
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The universe, black holes, and the Big Bang /
by Gifford, Clive,
Publication:
. 32 pages :
, "First published in 2015 by Wayland"--Title page verso.
28 cm.
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(1),
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