@book{12129,
	author = {Critchfield, William Burke. and Little, Elbert L.},
	title = {Geographic distribution of the pines of the world /},
	publisher = {U.S. Dept. of Agriculture, Forest Service,},
	year = {1966.},
	series = {Miscellaneous publication / United States Department of Agriculture ;},
	address = {Washington, D.C. :},
	note = {Cover title.}
}