@book{6446,
	author = {Little, Elbert L },
	title = {Atlas of United States trees},
	publisher = {United States Government Printing Office, },
	year = {1977},
	address = {Washington, D.C.: },
	note = {Vol. 3 (Minor western hardwoods) ; vi, 13p.
Vol. 4 ( Minor eastern hardwoods) ; v, 17p.}
}