@book{12676,
	author = {Duncan, Dayton. and Burns, Ken,},
	title = {The national parks :},
	publisher = {Alfred A. Knopf,},
	year = {2009.},
	address = {New York :},
	edition = {1st ed.},
	note = {"Based on a Ken Burns film produced by Ken Burns and Dayton Duncan, written by Dayton Duncan."}
}