@book{22440,
	author = {Little, Elbert L., Jr. and E.U.A. Forest Service.},
	title = {Atlas of United States trees},
	publisher = {Department of Agriculture,},
	year = {19 -},
	series = {USDA. Miscellaneous publication},
	address = {Washington, U.S. :},
	note = {La biblioteca tiene: v.3 Minor Western hardwoods.- v.4 Minor aeastern hardwoods.- v.5 Florida.- v.6 Supplement}
}