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The Double Helix - National Geographic Kids, and Trueit, Trudi, and Baines, Becky (Editor)
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The mystery deepens and the action intensifies for 12-year-old Cruz Coronado and friends in the exciting third book in the Explorer Academy series. The adventure continues for Cruz, Emmett, Sailor, and Bryndis as they continue their studies at sea and travel to exotic locations around the world. A mysterious person alerts Cruz to impending danger while he and a few trusted pals explore ancient ruins in Petra, Jordan, and search for another piece of the puzzle his mother left behind. Worst of all, now his father ...

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The Double Helix 2019, National Geographic Kids

ISBN-13: 9781426334580

Hardcover