@book{282643,
	author = {United States.},
	title = {Issues regarding the new NPS methodology used to evaluate the achievement of natural quiet restoration standards in Grand Canyon National Park :},
	publisher = {U.S. G.P.O. :},
	year = {1999 [i.e. 2000]},
	address = {Washington :},
	note = {Shipping list no.: 2000-0516-M.}
}