1.
Yellowstone Wolves : Science and Discovery in the World's First National Park
by Smith, Douglas W., Stahler,...
ISBN: 9780226728346
2.
Northern Yellowstone Elk: Resilience and Adaptation to Changes in Management Policies and th...
by White, P. J., Stahler, Dani...
ISBN: 9798895049679
List Price: $29.99