Title: The Greater Yellowstone ecosystem
Subjects: Ecology, Fire ecology, Wildlife reintroduction, Environmental policy, Wildlife conservation, Congresses, Yellowstone national park, Environmental policy, united states, Ecosystems, Wilderness, Cultural heritage, Wildlife management, Okosystem, Aufsatzsammlung, Umweltpolitik, Naturschutz, Okologie, Feuer
Places: Yellowstone National Park Region