When wolves were eliminated from Yellowstone National Park the natural system was out of balance. Shows the return of the wolves to the park and the natural balance being restored.
- ISBN10 0802796877
- ISBN13 9780802796875
- Publish Date 29 April 2008
- Publish Status Out of Print
- Out of Print 13 March 2021
- Publish Country US
- Imprint Walker & Company
- Format Hardcover (Library Binding)
- Pages 39
- Language English