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Book, 2016
Current format, Book, 2016, First edition, Available .
Book, 2016
Current format, Book, 2016, First edition, Available . Offered in 0 more formats
The Sassafras twins continue their worldwide adventure using invisible zip lines to catch up on the science they missed during the school year. In the fourth leg of their summer science journey, Blaine and Tracey zip around the globe learning about earth science. They visit the plains of Oklahoma, the mountains of Patagonia, the open and, and more as they learn about weather, rivers, oceans, and other geological features around the world.
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