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Previews available in: English
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Book Details
Table of Contents
6 readers each : 12A : Earth and space / Harriet Stansbury
12B : Exploring Earth and space / Wolf Shelton
12C : Guide to the constellations / Susan Jones Leeming
13A : Technology in our world / Arlene Block
13B : Technology / Wolf Shelton
13C : Flying machines / Tess Mason.

