A Mystery in Yellowstone National ParkBook - 2007
Jack, his younger sister, and the family's foster child, Troy, go to Yellowstone National Park, where Jack's mother, a wildlife veterinarian, is investigating a report that wolves reintroduced to the park have killed a dog there.
Publisher: Washington, D.C. : National Geographic, , c1997.
Edition: 1st digest ed.
Characteristics: 157 p. : map ; 20 cm.