@book{277496,
	author = {United States.},
	title = {Black Canyon of the Gunnison National Park, Colorado /},
	publisher = {National Park Service, U.S. Department of the Interior,},
	year = {[2018]},
	address = {[Washington, D.C.] :},
	edition = {Last updated 2018.},
	note = {Relief shown by shading and spot heights.}
}