Regulacje i polityka gospodarcza · 13/12/2007
National Park Service Announces Record of Decision for Winter Use Plans in Yellowstone and Grand Teton National Parks, Wyoming
The National Park Service has finalized its plan for winter use in Yellowstone and Grand Teton National Parks, Wyoming, allowing 540 snowmobiles and 83 snowcoaches per day, with 100% commercially guided tours, starting from the winter of 2007-2008