Clark, Tim; Amato, E.; Whittemore, D. and Harvey, A. 1991. Policy and programs for ecosystem management in the Greater Yellowstone Ecosystem: an analysis. Conservation Biology. 5(1): 412-422.
Clark, Tim; Amato, E.; Whittemore, D. and Harvey, A. 1991. Policy and programs for ecosystem management in the Greater Yellowstone Ecosystem: an analysis. Conservation Biology. 5(1): 412-422.