@book{21036,
	author = {Food and Agriculture Organization of the United Nations.},
	title = {World reference base for soil resources, 2006 :},
	publisher = {Food and Agriculture Organization of the United Nations,},
	year = {2006.},
	series = {World soil resources reports,},
	address = {Rome :},
	edition = {2006 ed.},
	url = {http://www.loc.gov/catdir/toc/fy0710/2006484408.html}
}