@book{25728,
	author = {Gregory, Herbert E.},
	title = {The Navajo country :},
	publisher = {Govt. Print. Off.,},
	year = {1916.},
	series = {United States Geological Survey. Water-supply paper ;},
	address = {Washington :},
	note = {Two folded maps in pocket inside back cover.},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.00297140498}
}