Outer space text xx 19uu monographic eng
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78 p. ; col. ; ill. A Reference book dealing with the solar system, the universe, astronomy and space travel. Bibliography: p. 68. Inlcudes index Space--Study and teaching Astronomy REF 520 Ou1 1986 Let's Discover, 15 0-8172-2614-1 001117 20140412111308.0