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Research Balloons: Exploring Hidden Worlds
Carole S. Briggs
Library Binding (Lerner Pub Group, July 1, 1988)Describes different kinds of research balloons and the remarkable work that they do in expanding our knowledge of the world.
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Research Balloons: Exploring Hidden Worlds
Carole S. Briggs
Hardcover (Lerner Pub Group, March 15, 1988)None