Study: National Parks worth $92 billion 0 01.07.2016 11:17 United Press International (UPI.com) Shawn PriceWASHINGTON, July 1 (UPI) -- The nation's national parks and National Park Service have a total estimated economic value of $92 billion, a new study finds. Партнёры Smi24.net Все новости за 24 часа Музыкальные новости Агрегатор новостей 24СМИ