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When the Wolves Returned: Restoring Nature's Balance in Yellowstone - Patent, Dorothy Hinshaw, and Hartman, Cassie (Photographer)
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Yellowstone National Park's majestic geologic wonders and remarkable wildlife draw millions of visitors each year. But there was a time when these natural treasures were in great danger, all because after years of unrestricted hunting, one key piece of the puzzle had been eliminated--the wolf. Now, more than a decade after scientists realized the wolves' essential role and returned them to Yellowstone, the park's natural balance is gradually being restored. The informative dual-level text and spectacular full-color ...

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When the Wolves Returned: Restoring Nature's Balance in Yellowstone 2008, Bloomsbury U.S.A. Children's Books, New York

ISBN-13: 9780802796868

Hardcover

When the Wolves Returned: Restoring Nature's Balance in Yellowstone 2008, Walker & Company, New York

ISBN-13: 9780802796875

Hardcover